Historical clue formulations

• Tex-___ — 2018-09-02
• Ariz. neighbor — 2017-04-25
• Where tequila originated: Abbr. — 2015-12-04
• NAFTA signatory: Abbr. — 2014-11-19
• Its flag has an eagle in the center: Abbr. — 2014-01-18
• U.S.A. neighbor — 2013-01-06
• Code for Latin America's busiest airport — 2010-09-10
• Felipe Calderón's land: Abbr. — 2010-03-04
• Host of the 1970 and 1986 World Cup: Abbr. — 2010-01-14
• Felipe Calderón's land: Abbr. — 2007-12-26
• Nafta signer: Abbr. — 2006-05-25
• Vicente Fox's country: Abbr. — 2002-05-08
• Neighbor of Guat. — 1998-12-09
• O.A.S. member: Abbr. — 1998-03-08
• Half of a popular cuisine's name — 1997-01-25
• Country in N.A. — 1996-05-18
• See 18-Down — 1995-03-30
• Tex- _____ (cooking style) — 1994-09-29
• Tex-_____ (hot cuisine) — 1994-04-18