Maduro’s capture illustrates what I believe is one of the biggest problems in politics: people frequently treat principles as costumes—worn when convenient, discarded when costly. Over nearly two decades working in and around politics, I’ve watched the same pattern play out again and again—and today’s events in Venezuela put it on display in neon. The US military carried out strikes in Caracas and captured Venezuelan President Nicolás Maduro and his wife, flying them to New York in what the administration is framing as a kind of “law enforcement” operation.  Look, there are plenty of people...