Possible Clues:

• Grp. that includes Canada and Colombia
• Org. that includes Mexico
• Bicontinental gp.
• W. alliance
• Org. that evolved from the Pan American Union
• The U.S. and Can. are in it
• Grp. founded in Bogotá
• Western alliance since '48
• U.S., Latin Amer., etc.
• Gp. that suspended Cuba in 1962