Once independence had been yielded to the American Colonies, the interest of the British Government rapidly waned in affairs American. True, there still remained the valued establishments in the West Indies, and the less considered British possessions on the continent to the north of the United States. Meanwhile, there were occasional frictions with America arising from uncertain claims drawn from the former colonial privileges of the new state, or from boundary contentions not settled in the treaty of peace. Thus the use of the Newfoundland fisheries furnished ground for an acrimonious controversy lasting even into the twentieth century, and occasionally rising to the danger point. Boundary disputes dragged along through official argument, survey commissions, arbitration, to final settlement, as in the case of the northern limits of the State of Maine fixed at last by the Treaty of Washington of 1842, and then on lines fair to both sides at any time in the forty years of legal bickering. Very early, in 1817, an agreement creditable to the wisdom and pacific intentions of both countries, was reached establishing small and equal naval armaments on the Great Lakes. The British fear of an American attack on Canada proved groundless as time went on and was definitely set at rest by the strict curb placed by the American Government upon the restless activities of such of its citizens as sympathized with the followers of McKenzie and Papineau in the Canadian rebellion of 1837[4].

None of these governmental contacts affected greatly the British policy toward America. But the "War of 1812," as it is termed in the United States, "Mr. Madison's War," as it was derisively named by Tory contemporaries in Great Britain, arose from serious policies in which the respective governments were in definite opposition. Briefly, this was a clash between belligerent and neutral interests. Britain, fighting at first for the preservation of Europe against the spread of French revolutionary influence, later against the Napoleonic plan of Empire, held the seas in her grasp and exercised with vigour all the accustomed rights of a naval belligerent. Of necessity, from her point of view, and as always in the case of the dominant naval belligerent, she stretched principles of international law to their utmost interpretation to secure her victory in war. America, soon the only maritime neutral of importance, and profiting greatly by her neutrality, contested point by point the issue of exceeded belligerent right as established in international law. America did more; she advanced new rules and theories of belligerent and neutral right respectively, and demanded that the belligerents accede to them. Dispute arose over blockades, contraband, the British "rule of 1756" which would have forbidden American trade with French colonies in war time, since such trade was prohibited by France herself in time of peace. But first and foremost as touching the personal sensibilities and patriotism of both countries was the British exercise of a right of search and seizure to recover British sailors.

Moreover this asserted right brought into clear view definitely opposed theories as to citizenship. Great Britain claimed that a man once born a British subject could never cease to be a subject--could never "alienate his duty." It was her practice to fill up her navy, in part at least, by the "impressment" of her sailor folk, taking them whenever needed, and wherever found--in her own coast towns, or from the decks of her own mercantile marine. But many British sailors sought security from such impressment by desertion in American ports or were tempted to desert to American merchant ships by the high pay obtainable in the rapidly-expanding United States merchant marine. Many became by naturalization citizens of the United States, and it was the duty of America to defend them as such in their lives and business. America ultimately came to hold, in short, that expatriation was accomplished from Great Britain when American citizenship was conferred. On shore they were safe, for Britain did not attempt to reclaim her subjects from the soil of another nation. But she denied that the American flag on merchant vessels at sea gave like security and she asserted a naval right to search such vessels in time of peace, professing her complete acquiescence in a like right to the American navy over British merchant vessels--a concession refused by America, and of no practical value since no American citizen sought service in the British merchant marine.

This "right of search" controversy involved then, two basic points of opposition between the two governments. First America contested the British theory of "once a citizen always a citizen[5]"; second, America denied any right whatever to a foreign naval vessel in time of peace to stop and search a vessel lawfully flying the American flag. The right of search in time of war, that is, a belligerent right of search, America never denied, but there was both then and later much public confusion in both countries as to the question at issue since, once at war, Great Britain frequently exercised a legal belligerent right of search and followed it up by the seizure of sailors alleged to be British subjects. Nor were British naval captains especially careful to make sure that no American-born sailors were included in their impressment seizures, and as the accounts spread of victim after victim, the American irritation steadily increased. True, France was also an offender, but as the weaker naval power her offence was lost sight of in view of the, literally, thousands of bona fide Americans seized by Great Britain. Here, then, was a third cause of irritation connected with impressment, though not a point of governmental dispute as to right, for Great Britain professed her earnest desire to restore promptly any American-born sailors whom her naval officers had seized through error. In fact many such sailors were soon liberated, but a large number either continued to serve on British ships or to languish in British prisons until the end of the Napoleonic Wars[6].

There were other, possibly greater, causes of the War of 1812, most of them arising out of the conflicting interests of the chief maritime neutral and the chief naval belligerent. The pacific presidential administration of Jefferson sought by trade restrictions, using embargo and non-intercourse acts, to bring pressure on both England and France, hoping to force a better treatment of neutrals. The United States, divided in sympathy between the belligerents, came near to disorder and disruption at home, over the question of foreign policy. But through all American factions there ran the feeling of growing animosity to Great Britain because of impressment. At last, war was declared by America in 1812 and though at the moment bitterly opposed by one section, New England, that war later came to be regarded as of great national value as one of the factors which welded the discordant states into a national unity. Naturally also, the war once ended, its commercial causes were quickly forgotten, whereas the individual, personal offence involved in impressment and right of search, with its insult to national pride, became a patriotic theme for politicians and for the press. To deny, in fact, a British "right of search" became a national point of honour, upon which no American statesman would have dared to yield to British overtures.

In American eyes the War of 1812 appears as a "second war of Independence" and also as of international importance in contesting an unjust use by Britain of her control of the seas. Also, it is to be remembered that no other war of importance was fought by America until the Mexican War of 1846, and militant patriotism was thus centred on the two wars fought against Great Britain. The contemporary British view was that of a nation involved in a life and death struggle with a great European enemy, irritated by what seemed captious claims, developed to war, by a minor power[7]. To be sure there were a few obstinate Tories in Britain who saw in the war the opportunity of smashing at one blow Napoleon's dream of empire, and the American "democratic system." The London Times urged the government to "finish with Mr. Bonaparte and then deal with Mr. Madison and democracy," arguing that it should be England's object to subvert "the whole system of the Jeffersonian school." But this was not the purpose of the British Government, nor would such a purpose have been tolerated by the small but vigorous Whig minority in Parliament.

The peace of 1814, signed at Ghent, merely declared an end of the war, quietly ignoring all the alleged causes of the conflict. Impressment was not mentioned, but it was never again resorted to by Great Britain upon American ships. But the principle of right of search in time of peace, though for another object than impressment, was soon again asserted by Great Britain and for forty years was a cause of constant irritation and a source of danger in the relations of the two countries. Stirred by philanthropic emotion Great Britain entered upon a world crusade for the suppression of the African Slave Trade. All nations in principle repudiated that trade and Britain made treaties with various maritime powers giving mutual right of search to the naval vessels of each upon the others' merchant vessels. The African Slave Trade was in fact outlawed for the flags of all nations. But America, smarting under the memory of impressment injuries, and maintaining in any case the doctrine that in time of peace the national flag protected a vessel from interference or search by the naval vessels of any other power, refused to sign mutual right of search treaties and denied, absolutely, such a right for any cause whatever to Great Britain or to any other nation. Being refused a treaty, Britain merely renewed her assertion of the right and continued to exercise it.

Thus the right of search in time of peace controversy was not ended with the war of 1812 but remained a constant sore in national relations, for Britain alone used her navy with energy to suppress the slave trade, and the slave traders of all nations sought refuge, when approached by a British naval vessel, under the protection of the American flag. If Britain respected the flag, and sheered off from search, how could she stop the trade? If she ignored the flag and on boarding found an innocent American vessel engaged in legal trade, there resulted claims for damages by detention of voyage, and demands by the American Government for apology and reparation. The real slave trader, seized under the American flag, never protested to the United States, nor claimed American citizenship, for his punishment in American law for engaging in the slave trade was death, while under the law of any other nation it did not exceed imprisonment, fine and loss of his vessel.

Summed up in terms of governmental attitude the British contention was that here was a great international humanitarian object frustrated by an absurd American sensitiveness on a point of honour about the flag. After fifteen years of dispute Great Britain offered to abandon any claim to a right of search, contenting herself with a right of visit, merely to verify a vessel's right to fly the American flag. America asserted this to be mere pretence, involving no renunciation of a practice whose legality she denied. In 1842, in the treaty settling the Maine boundary controversy, the eighth article sought a method of escape. Joint cruising squadrons were provided for the coast of Africa, the British to search all suspected vessels except those flying the American flag, and these to be searched by the American squadron. At once President Tyler notified Congress that Great Britain had renounced the right of search. Immediately in Parliament a clamour was raised against the Government for the "sacrifice" of a British right at sea, and Lord Aberdeen promptly made official disclaimer of such surrender.

Thus, heritage of the War of 1812 right of search in time of peace was a steady irritant. America doubted somewhat the honesty of Great Britain, appreciating in part the humanitarian purpose, but suspicious of an ulterior "will to rule the seas." After 1830 no American political leader would have dared to yield the right of search. Great Britain for her part, viewing the expansion of domestic slavery in the United States, came gradually to attribute the American contention, not to patriotic pride, but to the selfish business interests of the slave-holding states. In the end, in 1858, with a waning British enthusiasm for the cause of slave trade suppression, and with recognition that America had become a great world power, Britain yielded her claim to right of search or visit, save when established by Treaty. Four years later, in 1862, it may well have seemed to British statesmen that American slavery had indeed been the basic cause of America's attitude, for in that year a treaty was signed by the two nations giving mutual right of search for the suppression of the African Slave Trade. In fact, however, this was but an effort by Seward, Secretary of State for the North, to influence British and European opinion against the seceding slave states of the South.