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A top fighter in the '80s and '90s, Camacho has run into a series of problems in recent years — including a burglary arrest and conviction. He was shot Tuesday in Puerto Rico. A man with him was killed.
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Puerto Ricans are American citizens who do not vote in U.S. presidential general elections, but they do participate in Republican and Democratic nominating contests. Sunday, Puerto Rico holds a GOP primary. Both Rick Santorum and Mitt Romney visited the island this week. From San Juan, NPR's David Welna reports.