ABC's Jay O'Brien reports on the resignation of the Food and Drug Administration’s top vaccine official, Peter Marks.

ABC's senior national correspondent Terry Moran reports Greenlanders’ reaction to Vice President JD Vance's brief visit to Greenland.

The southwestern border mission and the detention operations at Guantanamo Bay have cost close to $330 million through mid-March, according to a U.S. official.

Denmark is open to discussions with the U.S. on how to "fix" the status quo in Greenland, the country's foreign minister said, after Vice President JD Vance's visit.

Federal judges in D.C. on Friday partially blocked two executive orders signed by President Donald Trump targeting the Jenner and Block and WilmerHale law firms

The judge's order requires the Trump administration to reinstate terminated CFPB employees among other steps.

ABC News’ Alex Perez reports from Chicago on how the Trump administration’s immigration crackdowns are causing mixed emotions, spurring fear in so many while others want to see resources reallocated.

The government revoked Rumeysa Ozturk's visa due to her pro-Palestinian activism, Secretary of State Marco Rubio said Thursday.

The State Department said it's officially shuttering the U.S. Agency for International Development, in what could deal a final blow to the beleaguered foreign aid agency.

A Russian researcher at Harvard University is being detained over failing to declare frog embryos while passing through customs, according to a filing by her attorney.

Former Deputy Pentagon Press Secretary Sabrina Singh reacts to the Trump administration's Signal group chat leak.

Kevin Griffis, former CDC communications director, discusses why he left his job with the The Centers for Disease Control and Prevention.

Vice President JD Vance took questions at a press conference during a trip to Greenland on Friday, where he visited Pituffik Space Base and met with service members.

JD and Usha Vance, as well as national security adviser Mike Waltz, traveled to Greenland on Friday, where they visited Pituffik Space Base and met with service members.

From job cuts and tariffs to a growing scandal over a group chat among national security officials. ABC News’ Rachel Scott shares the latest. 

The Trump administration has asked the Supreme Court a second time to lift a judge's block on deportations of alleged migrant gang members under the Alien Enemies Act.

Vice President JD Vance and second lady Usha Vance arrived in Greenland on Friday for a scaled-back visit to the Pituffik Space Base.

If allowed to go into effect, the Trump administration's new policy on transgender soldiers would be a "de facto blanket prohibition," a federal judge wrote.

Former CDC Director Dr. Tom Frieden warns that “cutting things is not likely to improve them.”

El Salvador's CECOT prison, where over 200 alleged Venezuelan gang members deported from the U.S. are being held, has been criticized for alleged human rights violations.

An appeals court has rejected the Trump administration's effort to lift U.S. District Judge James Boasberg's block on deportations under the Alien Enemies Act. 

The Trump administration is targeting a half dozen international students as part of its crackdown on pro-Palestinian campus activism.

Thousands of HHS employees could lose their jobs as soon as today as part of a massive overhaul of the agency.

Vice President JD Vance and second lady Usha Vance will touch down in Greenland for a trip that’s seen in the territory as far more than a friendly visit.

A prominent Washington law firm targeted by President Donald Trump has sued to block an executive order that threatens its federal contracts and the security clearances of its employees

Organizations that provide legal aid to migrant children have filed a lawsuit against the U.S. Department of Health and Human Services after the agency cut funding.

The Department of Health and Human Services confirmed on Thursday that about 10,000 full-time employees will soon lose their jobs.

Federal immigration agents have detained a University of Alabama doctoral student who is a citizen of Iran, according to the school and ICE records.

Top Trump officials are facing a firestorm after using the commercially available app Signal to discuss a U.S. military attack on Houthi rebels in Yemen.

President Donald Trump said the U.S. will "go as far as we have to go" to get control of Greenland, ahead of a planned visit to the Arctic island by the vice president.

The U.S. has arrested a top MS-13 gang member, according to a post on X by Attorney General Pam Bondi.

A judge has ordered the Trump administration to preserve the contents of the Signal app chat in which top officials discussed Yemen military strikes earlier this month.

A judge has ordered the Trump administration to preserve the contents of the Signal app chat in which top officials discussed Yemen military strikes earlier this month.

Officials inadvertently added a reporter to an unsecured group chat discussing plans for a U.S. attack on Houthis in Yemen. Here's a look at a timeline of the events.

Trump probably 'violated the law' when he fired independent inspectors general, a federal judge said during a hearing about whether such terminations were legal.

The attorney general also suggested the Signal chat leak is unlikely to be criminally investigated.

The White House has pulled New York Rep. Elise Stefanik’s nomination to be United Nations ambassador, President Donald Trump announced.

Former Federal Trade Commissioners Rebecca Slaughter and Alvaro Bedoya speak out after filing a lawsuit for what they are calling an "illegal" firing by the Trump administration.

The Department of Health and Human Services confirmed on Thursday that about 10,000 full-time employees will soon lose their jobs.

ABC News’ Luis Martinez and former CIA field operative Darrell Blocker discuss top national security officials’ use of the messaging app to discuss a then-pending military strike in Yemen.

The Atlantic's new article detailed alleged information about airstrikes in Yemen and disputes the Trump administration's claims that no classified information was shared in the Signal group.

A month after Elon Musk began directing federal employees to email a list of five of their accomplishments from the previous week, technical issues have hit the process.

The U.S. has arrested a top MS-13 gang member, according to a post on X by Attorney General Pam Bondi.

Former DHS Assistant Secretary for Counterterrorism Elizabeth Neumann reacts to top national security officials’ use of the messaging app to discuss a then-pending military strike in Yemen.

The Trump administration has offered different, and at times contradictory, explanations for how Jeffrey Goldberg got included on the sensitive Signal chat.

JD Vance made a noteworthy statement in the Signal chat, breaking with Donald Trump and questioning if the attacks on the Houthis in Yemen should be delayed.

The Atlantic on Wednesday published a new article detailing information about recent American strikes in Yemen that was accidentally shared with a journalist via Signal.

An appeals court has rejected the Trump administration's effort to lift U.S. District Judge James Boasberg's block on deportations under the Alien Enemies Act.

Secretary of State Marco Rubio weighed in on the Signal debacle for the first time, acknowledging that “someone made a big mistake and added a journalist.”

Jeffrey Goldberg joins ABCNL to discuss his decision to publish a second round of information from the chat.