Historical clue formulations

• Guarantee of the Sixth Amendment — 2017-09-16
• Mason, notably — 2016-01-14
• One getting into briefs? — 2013-11-29
• Firm part — 2010-10-24
• Any one of 25 U.S. presidents — 2001-02-03
• Bartender? — 1999-05-02
• Johnnie Cochran, e.g. — 1995-03-06
• Court player — 1994-05-08