Historical clue formulations

• What the 21st Amendment achieved — 2021-12-30
• Void, in a way — 2021-01-08
• Undo, legislatively — 2019-12-01
• The 21st Amendment, e.g. — 2018-12-23
• Undo, as a law — 2017-10-17
• Undoing of legislation — 2017-08-15
• Nullify, as a law — 2013-02-11
• Undo — 2011-08-27
• Officially annul — 2010-12-29
• Cause during Prohibition — 2008-11-13
• 1932 Democratic campaign plank — 2007-10-21
• Anti-Prohibitionist's cause — 2006-10-01
• The 21st Amendment, e.g. — 2005-05-03
• Statute removal — 2004-09-13
• Abrogate — 2004-07-18
• Take off the books — 2003-09-02
• Undo — 2001-04-01
• Lift — 1998-11-15
• Abrogate — 1996-09-14
• Abrogate — 1994-12-15