I communicate herewith a copy of the constitution of State government formed by a convention of the people of the Territory of Wisconsin in pursuance of the act of Congress of August 6, 1846, entitled "An act to enable the people of Wisconsin Territory to form a constitution and State government, and for the admission of such State into the Union."

I communicate also the documents accompanying the constitution, which have been transmitted to me by the president of the convention.

JAMES K. POLK.

MARCH 16, 1848.

WASHINGTON, March 18, 1848.

To the Senate of the United States:

Sudden and severe indisposition has prevented, and may for an indefinite period continue to prevent, Ambrose H. Sevier, recently appointed commissioner to Mexico, from departing on his mission. The public interest requires that a diplomatic functionary should proceed without delay to Mexico, bearing with him the treaty between the United States and the Mexican Republic, lately ratified, with amendments, by and with the advice and consent of the Senate of the United States. It is deemed proper, with this view, to appoint an associate commissioner, with full powers to act separately or jointly with Mr. Sevier.

I therefore nominate Nathan Clifford, of the State of Maine, to be a commissioner, with the rank of envoy extraordinary and minister plenipotentiary, of the United States to the Mexican Republic.

JAMES K. POLK.

WASHINGTON, March 22, 1848.