"At this time, the message thread that was reported appears to be authentic, and we are reviewing how an inadvertent number was added to the chain," the NSC said.

Recent government cuts have raised questions about whether President Donald Trump's administration will aim to dismantle and privatize the National Weather Service.

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.

President Donald Trump said he is confident in his national security adviser, Mike Waltz.

As the White House comes under fire for allegedly using Signal to discuss foreign policy plans, the encrypted messaging platform has now come into the spotlight.

Since Trump eliminated nearly half of the Department of Education's workforce through an overhaul that affected roughly 2,000 people, former employees say there is chaos.

J.D. Vance and second lady Usha Vance will be part of a delegation visiting Greenland, after Trump's statements that the U.S. should own the Danish territory.

President Donald Trump's nominee to lead the SSA distanced himself from some of the actions taken at the agency by officials linked to Elon Musk and DOGE.

Members of the Trump administration coordinated highly sensitive Yemen attack plans on an unsecure group chat, a White House official confirmed.

Russia and Ukraine also agreed to "develop measures to implement the agreement to ban strikes against energy facilities in Russia and Ukraine," the White House said.

ABC News’ Martha Raddatz explains the shocking revelations made in “The Atlantic,” after their editor-in-chief was apparently inadvertently included in a group chat with government officials.

Director of National Intelligence Tulsi Gabbard and CIA Director John Ratcliffe were grilled at a hearing by Democrats over war plans leaked to a journalist.

As the Trump administration gets challenged in court over its policies, federal judges have been blunt in their rulings from the bench and on paper.

Yunseo Chung, a 21-year-old Columbia student who moved from South Korea at age 7, is suing Trump after an official said her permanent legal status in the U.S. was revoked.

The director of national intelligence was among other top intelligence officers testifying on Capitol Hill before the Senate Intelligence Committee.

Sen. Mark Warner, D-Va., questioned the director of national intelligence and director of the CIA about the messaging controversy.

ABC News’ Karen Travers, Jay O’Brien, Luis Martinez and contributor John Cohen break down reactions from lawmakers to an unsecure group chat involving a U.S. attack on Houthis in Yemen.

The Trump administration is invoking state secrets privilege to avoid giving a judge more information about last week's deportation flights under the Alien Enemies Act.

The White House said Monday a Signal group chat discussing a U.S. attack on Houthis in Yemen that "inadvertently" included Jeffrey Goldberg, editor-in-chief of The Atlantic, "appears to be authentic."

After the Trump administration inadvertently added Jeffrey Goldberg, editor-in-chief of The Atlantic, to an unsecured chat about war plans, Democrats expressed outrage.

Atlantic editor-in-chief Jeffrey Goldberg discussed the moment he realized he had been added to a Signal chat discussing a U.S. attack on Houthis in Yemen.

Multiple Trump administration officials who allegedly held classified discussions on an open messaging platform condemned the mishandling of classified records by others.

The U.S. treated alleged Nazis better during World War II than the Trump administration treated Venezuelan migrants last week, a judge told DOJ attorneys at a hearing.

Greenland’s prime minister said his government won’t meet with the U.S. delegation, which includes second lady Usha Vance and White House national security adviser Mike Waltz.

Town halls are among the strategies that Democrats are using to try to get their base fired up against the Trump White House.

Vice Pres. Vance and Pres. Trump’s national security team members reportedly shared war plans in a group chat on an unsecured app that mistakenly included a journalist from The Atlantic.

Habba rose to fame as a member of Trump's circle after several years in private practice in New Jersey.

The government claimed Palestinian protester Mahmoud Khalil intentionally misrepresented information on his green card application and is inadmissible to the U.S.

The second lady’s office says she will be part of a U.S. delegation visiting historic sites and learning about heritage.

Members of the Trump administration coordinated highly sensitive Yemen war plans on an unsecure group chat.

The U.S. treated alleged Nazis better during World War II than the Trump Administration treated Venezuelan migrants last week, a federal appeals judge told a DOJ lawyer during a court hearing Monday.

The IRS is nearing an agreement with ICE that would allow immigration officials to use tax data for deportations, two sources familiar with the matter told ABC News.

The Trump administration has asked the Supreme Court for an emergency stay of a judge's order that 16,000 terminated federal probationary employees be reinstated.

Trump on Monday named Alina Habba, his personal attorney-turned-White House counselor, to serve as the next interim U.S. attorney for the District of New Jersey.

Todd Warner and other Trump supporters in Tennessee express their fears for public schools as the president moves to eliminate the Department of Education.

The Trump administration’s legal battle over deporting hundreds of migrants from Venezuela heats up.

Tom Homan, Trump's "border czar," said the administration wouldn't defy court orders from challenges over its using the Alien Enemies Act to deport undocumented migrants.

The Trump administration alleged many of the migrants are members of the Venezuelan gang Tren de Aragua.

ABC News’ Jonathan Karl interviews White House border czar Tom Homan on “This Week.”

ABC News Chief Washington Correspondent Jonathan Karl breaks down the latest on the battles between the Trump administration and the judicial system.

Sources tell ABC News the IRS is getting close to reaching a deal with immigration and customs enforcement to help the Trump administration’s deportation efforts by using sensitive taxpayer data.

Dr. Brittany Charlton is speaking out after the NIH terminated all of her grants studying how discriminatory laws impact mental health among LGBTQ+ teens.

A federal judge blocked the agency from granting personnel affiliated with DOGE access to agency systems containing personally identifiable information.

Wyoming Republican Rep. Harriet Hageman tangled with constituents at a fiery town hall in her home state on Thursday over Elon Musk's DOGE.

Some law experts are sounding the alarm, saying, the U.S. could be inching closer to a constitutional crisis as the Trump administration's legal conflict with the nation's judges escalates.

Cornell student who challenged Trump EOs targeting pro-Palestinian protesters now faces deportation.

Columbia University appears to have ceded to the Trump administration’s demands after a threat to withhold $400 million in federal funds.

Plus, President Donald Trump’s legal battle to deport migrants using the Alien Enemies Act.

Alfreda Masters said she finds it "unbelievable" that the webpage honoring her father's service has been taken down as a part of DEI scrubbing at the Pentagon.

The Trump administration argues the president has the power to round up individuals and deport them to a foreign country with no obligation to show any evidence against them to a court.