Frida Ghitis: Trump's right on Venezuela

How did it come to pass that President Donald Trump -- who insults Latin American migrants, vows to build a wall to keep them out, embraces authoritarian leaders around the world and undermines democracy at home -- is suddenly backing a pro-democracy uprising in Venezuela, recognizing opposition leader Juan Guaido as interim president, and doing it with the support of most Latin American nations, along with the world's leading liberal democracies?