The Treaty of Guadalupe Hidalgo
In March 1848 the U.S. Senate approved for ratification the treaty ending the Mexican War, which was signed in Guadalupe Hidalgo, Mexico, on February 2. In exchange for war-damage compensation of $15 million, Mexico ceded to the U.S. more than half its territory. The treaty redefined the U.S.-Mexico border and extended U.S. territory to the Pacific coast, intensifying congressional debates about the westward extension of slavery. Though the treaty protected the rights of former Mexican nationals who resided in the territory, many lost their land.