Constitution:
17 September 1787, effective 4 March 1789
Legal system:
federal court system based on English common law; each state has its own unique legal system, of which all but one (Louisiana, which is still influenced by the Napoleonic Code) is based on English common law; judicial review of legislative acts; has not accepted compulsory ICJ jurisdiction
Suffrage:
18 years of age; universal
Executive branch:
chief of state: President George W. BUSH (since 20 January 2001); Vice President Richard B. CHENEY (since 20 January 2001); note - the president is both the chief of state and head of government head of government: President George W. BUSH (since 20 January 2001); Vice President Richard B. CHENEY (since 20 January 2001) cabinet: Cabinet appointed by the president with Senate approval elections: president and vice president elected on the same ticket by a college of representatives who are elected directly from each state; president and vice president serve four-year terms (eligible for a second term); election last held 4 November 2008 (next to be held on 6 November 2012) election results: Barack H. OBAMA elected president; percent of popular vote - Barack H. OBAMA 52.4%, John MCCAIN 46.3%, other 1.3%; note - OBAMA is expected to assume office on 20 January 2009
Legislative branch:
bicameral Congress consists of the Senate (100 seats, 2 members are elected from each state by popular vote to serve six-year terms; one-third are elected every two years) and the House of Representatives (435 seats; members are directly elected by popular vote to serve two-year terms) elections: Senate - last held 7 November 2006 (next to be held November 2008); House of Representatives - last held 7 November 2006 (next to be held November 2008) election results: Senate - percent of vote by party - NA; seats by party - Democratic Party 49, Republican Party 49, independent 2; House of Representatives - percent of vote by party - NA; seats by party - Democratic Party 233, Republican Party 202