The largest union representing U.S. government employees filed a lawsuit on Wednesday to block President Donald Trump's plan to reclassify up to 50,000 federal workers and make it easier to fire them.

One of the most visible signs of how President Donald Trump is trying to reshape the federal government is his call for federal employees to return to the office full-time. On his first day, Trump signed an executive order that called for an end to remote work and later that week, agencies were instructed to end their telework policies.