36 U.S.C. § 124
National Freedom Day
The President may issue each year a proclamation designating February 1 as National Freedom Day to commemorate the signing by Abraham Lincoln on February 1, 1865 , of the joint resolution adopted by the Senate and the House of Representatives that proposed the 13th amendment to the Constitution.
( Pub. L. 105–225 , Aug. 12, 1998 , 112 Stat. 1259 .)