in the United States. David Wilmot of Pennsylvania, a Democrat, moved in the House of Representatives an amendment to the $2,000,000 bill, providing that in all territories to be acquired from Mexico slavery should be forever prohibited. This was the renowned “Wilmot Proviso.” The bill, with the proviso, passed the House, but failed in the Senate.
When Congress met in December, 1846, the American forces virtually controlled the larger part of the Mexican dominions. General Taylor had on September 22 and 23 assaulted Monterey, and on the 24th accepted the capitulation of General Ampudia. A great enterprise against Vera Cruz under General Scott was preparing. Polk, having received no money for his peace intrigue at the previous session, repeated the attempt. A bill appropriating $3,000,000 for purposes of negotiation was introduced in the House. Again the Wilmot Proviso was added to it. The contest grew warmer. Pro-slavery men in Congress, and Southern legislatures, proclaimed that this was a “Southern war;” that it was made to acquire more territory for slavery, and that they wanted the war to stop if, by the restriction of slavery, its object was to be defeated. Free State legislatures, on the other hand, one after another, men of both parties uniting, instructed their Senators and requested their Representatives to sustain the Wilmot Proviso. The Senate again struck out the proviso, and the House finally adopted the bill
