BOGOTÁ, Colombia—The Trump administration imposed sanctions on allies of Venezuelan President Nicolás Maduro and urged regional governments to isolate his regime after a weekend mission to deliver humanitarian aid sparked deadly violence, but played down the prospects for military intervention.
U.S. Vice President Mike Pence, in a visit to Colombia on Monday, called on members of the Lima Group, a coalition of Latin America’s biggest nations and Canada, to restrict visas for Mr. Maduro’s inner circle and follow the U.S. move...