President Donald Trump, in the first month-and-a-half of his second term, has issued a flurry of executive orders, frozen or terminated federal spending in unprecedented ways, and empowered the world’s richest man to pursue a sweeping and fast-moving campaign of disruption and downsizing across the federal government.

Staff at the Department of Education have been told to leave the agency’s headquarters by 6 p.m. Tuesday and that all department offices across the country will be closed Wednesday, with no reason or justification except “security reasons.