Donald Trump hosts a Halloween event at the White House

U.S. President Donald Trump and First Lady Melania Trump greet children dressed up in costumes during a Halloween event on the South Lawn of the White House in Washington, DC on Sunday, October 25, 2020. Trump's chief of staff today defended the White House response to the coronavirus after infections of at least three staff or advisers to Vice President Mike Pence, but said the U.S. is "not going to control" the pandemic. Photo by Yuri Gripas/UPI