Rubio credited Spain for the origins of the American cowboy. Mexico begs to differ
MEXICO CITY — Few figures occupy as prominent a niche in U.S. lore as the American cowboy, that embodiment of rugged individualism celebrated in dime novels, vintage radio, TV and Hollywood blockbusters. But recent musings from Secretary of State Marco Rubio have fueled a sometimes-acrimonious debate — mostly on social media — about the origins of the…