The return of the 737 MAX, Boeing's best-selling model, is the latest sign of disruption to new aircraft deliveries from a breakdown in the aerospace industry's decades-old duty-free status.

Reporters ask President Trump about the status of his negotiations with China and, in particular, whether he has spoken to Chinese President Xi Jinping amid the ongoing trade war.

U.S. Customs and Border Protection announced late Friday that some smartphones, computers, chips and other electronics would be exempted from tariffs, but Trump's top economic advisers hit the Sunday talk shows to explain the policy, saying that tariffs against electronics would be coming in the next month or two.