Trump 2nd term live updates: Dan Bongino named as deputy FBI director

Many federal law enforcement agencies are urging employees to use caution – or hold off altogether for now – in responding to the email to federal workers that demanded they detail what they "accomplished" or be terminated, especially due to the sensitive nature of their work, sources told ABC News.

"We are aware of an email that has been sent to federal employees by OPM ... We are seeking additional guidance from the Department of Justice on next steps. We will communicate to employees as soon as we know more," the FBI said in a message to its members that was obtained by ABC News.

U.S. Attorney John Durham, the top federal prosecutor in the eastern district of New York, also sent a message to his members telling them to hold off.

"Of course, a majority of our work is law enforcement sensitive (in addition to much classified work), so even assuming this is legitimate, we will need to be careful in how we respond to this inquiry. As noted, the deadline isn’t until 11:59 p.m. on Monday, so we have plenty of time," he wrote in his letter.

Ed Martin, the controversial acting U.S. attorney in Washington, D.C., who has been nominated to lead the office more permanently, however, appeared to be less cautious in an email to his staff.

"DOGE and Elon are doing great work! Historic. We are happy to be participate. [sic] Please respond to the HR email carefully with regard to confidentiality and our duties. Be general if you need to. If anyone gives you problems, I've got your back. You're good. See you Monday. Ed," he wrote in his email.

-ABC News' Mike Levine, Alexander Mallin, Aaron Katersky, Luke Barr and Katherine Faulders

Everett Kelley, the president of the American Federation of Government Employees, criticized Musk and Trump after federal workers received an email that demanded they detail what they "accomplished" -- or be terminated.

Kelley said he would challenge "any unlawful terminations of our members and federal employees across the country."

"It is cruel and disrespectful to hundreds of thousands of veterans who are wearing their second uniform in the civil service to be forced to justify their job duties to this out-of-touch, privileged, unelected billionaire who has never performed one single hour of honest public service in his life," he said in a statement.

A White House official, however, told ABC News it's up to each federal employee's manager to determine if their answers to the email are satisfactory.

If an employee misses the deadline of Monday night, it's also up to the discretion of the manager, the official claimed.

If an employee's manager determines the federal worker is not meeting the criteria, he or she can go through the agency process to report the employee and possibly get them fired, the official claimed.

-ABC News' Selina Wang

Trump met with Argentinian President Javier Milei on the sidelines of CPAC, according to a post on X by the White House.

The meeting was not announced on the president's official schedule. Trump was also scheduled to meet with Polish President Andrzej Duda to discuss the war in Ukraine.

Milei is facing calls for his impeachment after promoting a cryptocurrency on X. The cryptocurrency's value rose after the post and quickly dropped after he removed the post.

White House press secretary Karoline Leavitt reiterated during a gaggle with reporters Trump's comments that the administration believes Russia wants to make a deal to end the war with Ukraine.

Asked for details of when Russian President Vladimir Putin and President Donald Trump could meet, Leavitt said she had nothing to read out but did say that Trump is confident he can get a deal done to end the war between Russia and Ukraine this week.

-ABC News' Hannah Demissie