Historical clue formulations

• Still single — 2026-04-14
• Like nine U.S. presidents while in office — 2025-04-25
• Like bachelors — 2025-01-28
• Nonunion? — 2022-02-03
• Single — 2020-03-12
• Single — 2019-01-04
• Not taken seriously? — 2018-03-25
• Single — 2017-08-06
• Like all contestants on "The Bachelor" — 2016-04-23
• Single — 2014-12-01
• Single — 2014-10-21
• Non-union? — 2010-11-05
• Still single — 2005-05-02
• Single — 2003-10-30
• Single — 2003-05-29
• Single — 2000-07-19
• Single — 1997-02-02
• Single — 1996-08-25
• Single — 1995-02-22