The White House is working on an executive order to fire thousands of U.S. Department of Health and Human Services workers, the Wall Street Journal reported on Thursday, citing people familiar with the matter.

At least 20,000 federal employees have reportedly accepted the Trump administration’s deferred resignation offer, totaling about 1% of the federal workforce. Last week, the U.S. Office of Personnel Management sent an email to nearly 2.

The CIA has sent the White House an unclassified email listing all new hires that have been with the agency for two years or less in an effort to comply with an executive order to downsize the federal workforce,

A U.S. official said the CIA sent an unclassified list of employees to the White House to comply with President Trump’s executive order to reduce the federal workforce. Raising security concerns, some lawmakers are calling the list a “disastrous national security development.