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To preserve the Union, Clay’s compromise proposed to bring California into the Union as a free state; allow the New Mexico Territory to decide the slavery issue for itself; and retain slavery in the District of Columbia but abolish its slave trade. It would also enact a stronger fugitive slave law (requiring free states to return escaped slaves to their owners), and settle the Texas boundary and debt issues. These provisions later passed as separate measures.
Records of the U.S. Senate, National Archives and Records Administration