NEW YORK (AP) — The Trump administration urged Americans to cover their faces in public and limited exports of medical supplies Friday as New York's governor took his own dramatic step to fight the coronavirus — vowing to seize unused ventilators from private hospitals and companies.

President Donald Trump announced new guidelines that call for everyone to wear makeshift face coverings such as T-shirts and bandannas when leaving the house, especially in areas hit hard by the pandemic, like New York. But the president said he had no intention of following the advice from the Centers for Disease...