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

The head of the FDA's food division, which helps ensure the country's food supply is safe, resigned Monday following what he called the "indiscriminate firing" of roughly 89 people, according to sources familiar with the matter.

Among those fired: staff working on nutrition and infant formula safety and staff hired to review potentially unsafe food ingredients, according to two sources with knowledge of the firings.

Jim Jones, deputy commissioner for human foods, explained his resignation in a letter to the agency's acting commissioner. A source confirmed the following excerpts to ABC News.

"I was looking forward to working to pursue the Department's agenda of improving the health of Americans by reducing diet-related chronic disease and risks from chemicals in food," Jones said. "It has been increasingly clear that with the Trump Administration's disdain for the very people necessary to implement your agenda, however, it would have been fruitless for me to continue in this role."

-ABC News' Rachel Scott and Katherine Faulders

As thousands of federal employees continue to be terminated, sources at NASA tell ABC News that 10% of its workforce has been laid off.

“NASA is complying with the guidance and direction provided by OPM. It’s premature to discuss the impact to our agency, at this time,” they said in a statement.

– ABC News’ Gina Sunseri

The chief of the criminal division at the U.S. Attorney's Office for Washington, D.C., abruptly resigned Tuesday amid pressure from top Trump Justice Department appointees to freeze assets stemming from a Biden administration-era environmental initiative, sources familiar with the matter told ABC News.

A resignation letter sent to the office's employees by prosecutor Denise Cheung did not detail specific reasons for her sudden departure from the office, but encouraged prosecutors to continue adhering to the Constitution.

The move came just one day after President Donald Trump announced Ed Martin as his nominee for D.C. U.S. Attorney.

-- ABC News' Alexander Mallin and Katherine Faulders

Vice President JD Vance will speak at the Conservative Political Action Conference (CPAC) on Thursday, a source familiar confirmed to ABC News.

Vance spoke at the event last year, where much of his speech centered around foreign policy. The vice president recently spoke at the Munich Security Conference, where he stoked controversy by focusing much of his remarks on criticizing European allies.

-ABC News' Hannah Demissie