An attendee holds an American flag after an event with U.S. President Donald Trump, not pictured, at Marine Corps Air Station Miramar in San Diego, California, U.S., on Tuesday, March 13, 2018. Trump traveled to opposition territory -- California -- to fire up support for a wall along the U.S.-Mexico border, a project that has encountered resistance in Congress. Photographer: Patrick T. Fallon/Bloomberg
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