Vietnam is grappling with a surge in visitors, testing its Soviet-style criminal justice system as it tries to supercharge its economy through tourism.
A police vehicle parked on Bui Vien Street, a popular nightlife destination in Ho Chi Minh City, Vietnam, in August.
The seven-day visit, the longest since the two countries restored relations, is a show of mutual cooperation and a U.S. signal to China. But it comes during tensions over tariffs.