CUCUTA, Colombia (AP) — U.S. Secretary of State Mike Pompeo met with Venezuelan migrants in Colombia on Sunday as he wrapped up a four-nation tour of South America aimed at pressuring Venezuela's socialist president, Nicolas Maduro.

Pompeo went to a migrant center in the border town of Cucuta with Colombian President Ivan Duque. Not far away, Venezuelan security forces with riot gear stood in the middle of the Simon Bolivar international bridge separating the two countries.

The migrant center has been the first stop for some 3.4 million Venezuelans who have fled hyperinflation, severe shortage...