President Donald Trump's administration continued on Monday to enact brisk change across the federal government, with Elon Musk saying his Department of Government Efficiency was "shutting down" the U.

According to multiple sources, USAID workers were emailed that the headquarters was closed for the day and they should not come into their Washington office. CNN’s Jennifer Hansler explains what we know so far and plays remarks from both President Trump and Elon Musk,