According to two sources, Defense Secretary Pete Hegseth had the app installed on a personal computer inside his Pentagon office that was connected to the internet on an unsecured commercial line.

In at least two separate meetings Defense Secretary Pete Hegseth accused top-ranking military officers of leaking to the media and threatened to polygraph them.

Americans hold mixed views on President Donald Trump's immigration policies, according to a ABC News/Washington Post/Ipsos poll.

A Principal Women’s Health Initiative investigator Dr. Joann Manson tells ABC News’ Stephanie Ramos that the Trump administration’s cuts to women’s health research is a “devastating loss.”

Ranging from education policy to voting, the rulings marked the latest legal setbacks for the Trump administration, which is battling nearly 200 lawsuits in court.

Trump said the two sides are discussing trade. A Chinese official called it "fake news."

Defense Sec. Pete Hegseth used the Signal app on a personal computer in his office that was connected to the internet on an unsecured commercial line, sources told ABC News.

The DOJ is giving migrants who are given a notice of removal under the Alien Enemies Act "no less than 12 hours" to indicated that they intend to contest deportation.

Homeland Security Secretary Kristi Noem said she felt something brush against her leg as a thief was dragging away her purse at a Washington restaurant on Sunday.

Trump has made a new emergency request of the Supreme Court seeking an immediate stay of a nationwide injunction blocking the ban on transgender military service members.

Mohsen Mahdawi was arrested by ICE during a citizenship interview last week.

While a New Hampshire judge blocked enforcement for schools related to groups that brought a lawsuit, a Maryland order broadly blocks enforcement of a DOE memo.

After years of bashing Jeffrey Goldberg for his coverage of his administration, President Donald Trump said he will sit down with the editor of "The Atlantic."

Lawyers with the U.S. Attorney's Office for the Southern District of New York wrote that the attempt to end congestion pricing faces "considerable litigation risk."

A federal judge blocked the Trump administration's efforts to require proof of citizenship for voting.

The Trump administration is acknowledging it deported four alleged Venezuelan gang members to El Salvador despite a court order barring such deportations.

Democratic lawmakers questioning whether deals for pro bono work may violate federal bribery, extortion, honest services fraud or racketeering laws.

A day after a judge ordered the DOJ to more fully address the wrongful deportation of Kilmar Abrego Garcia, she paused discovery for the next seven days.

A federal judge paused discovery after ordering the government to more fully respond by Wednesday to requests from attorneys for wrongly deported Kilmar Abrego Garcia.

Several lobbyists who helped Donald Trump raise campaign and inaugural funds are now making an unprecedented amount of money on corporate lobbying, disclosures show.

The pastor of a Georgia megachurch who led a nationwide 40-day “fast” against Target stores is now calling for a “full Target boycott.”

A judge appeared inclined Wednesday to enter a permanent ruling barring the Trump administration from implementing an executive order targeting the law firm Perkins Coie.

The White House has been fielding proposals aimed at convincing people to marry and have children, an effort being pushed by groups focused on increasing the birth rate.

The defense secretary has denied that he shared classified war plans about U.S. airstrikes targeting Houthi militants in Yemen in a second group chat on the Signal messaging app.

New York Times reporter Caroline Kitchener discusses the incentives being considered to combat declining birth rates in the U.S.

The billionaire told Tesla shareholders that his work with the Department of Government Efficiency is winding down and he will be “allocating far more” of his time to his business.

Defaulted loans will be sent for collections next month, government says.

The eight petroleum-based dyes are found in thousands of products from candy to cereal to medication.

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.

Secretary of State Rubio announced a reorganization of the State Department Tuesday.

Defense Secretary Pete Hegseth dismissed reports that he shared highly sensitive U.S. military plans with his wife, brother and others in a Signal chat he created.

Marco Rubio unveils a sweeping plan to dramatically restructure the State Department that would see many of its longstanding offices and hundreds of positions eliminated.

A judge rebuked President Trump's use of the Alien Enemies Act to deport alleged migrant gang members in New York, comparing it to a medieval inquisition.

Defense Secretary Pete Hegseth strongly denied sharing classified information on Signal and lashed out at former aides he claimed want to "sabotage" Trump's agenda.

Matthew Podolsky, who has agreed to step down, took over for Danielle Sassoon, who resigned in protest of the Justice Department's order to drop corruption charges against New York Mayor Eric Adams.

The actions of the Trump administration will significantly decelerate the race to decarbonize economies around the world, according to energy and climate change experts.

The defense secretary strongly denied sharing classified information on Signal and lashed out at former aides he claimed want to "sabotage" Trump's agenda. ABC News’ Alex Mallin reports.

The top federal prosecutor in Manhattan has agreed to step aside, clearing the way for President Donald Trump to install his nominee.

Department of Homeland Security Secretary Kristi Noem's purse was stolen at a Washington restaurant over the weekend, according to a DHS official.

“I have spoken with the president and we are going to continue fighting. On the same page all the way,” Defense Secretary Pete Hegseth said on Monday.

At least three federal judges have blocked the ban from taking effect.

Secretary of Health and Human Services Robert F. Kennedy Jr. is expected to urge food manufacturers to phase out the use of eight dyes in the nation's food supply.

Sources said Defense Secretary Pete Hegseth shared information about a forthcoming U.S. attack on Houthi rebels in Yemen in a Signal message chat that included his wife, brother and personal lawyer.

President Donald Trump defended Defense Secretary Pete Hegseth after news of a second Signal chat Hegseth used to share details of military action against Houthis.

Members of President Donald Trump’s administration are increasingly feuding as they face an escalating series of controversies

DOJ lawyers told a judge in Colorado that the administration can give accused migrant gang members at least 24 hours to contest deportation under the Alien Enemies Act.

Those details shared in the second chat included the flight schedules for the F/A-18 Hornets involved in the pending attack on Houthi positions, according to the officials.

Watchdog group American Oversight renewed its lawsuit against the Trump administration over the “widespread” use of the messaging app Signal.

Defense Secretary Pete Hegseth shared military operation details with his wife, brother and personal lawyer.

Department of Homeland Security Secretary Kristi Noem's bag was stolen at a Washington restaurant over the weekend, according to a DHS official.