President Donald Trump announced he is ordering the U.S. to resume nuclear testing, leaving experts wondering what this would entail and how it would be implemented.

Trump, back from a weeklong trip in Asia, will have to confront how to handle deepening impacts from the shutdown on Americans.

President Donald Trump on Friday denied reports that he's made a decision to strike inside Venezuela.

Experts say Trump's direction for the U.S. to resume nuclear testing is dangerous to populations and would open a door for adversaries to sharpen their weapons.

Senate Republicans are resisting his demand to end the long-standing filibuster rule in order to end the government shutdown.

President Trump and first lady Melania Trump welcomed trick-or-treaters to the White House on Thursday, an annual Halloween tradition.

President Donald Trump and First Lady Melania hosted a Halloween celebration at the White House

The announcement came just minutes before Pres. Trump's meeting with Chinese President Xi Jinping.

Wall Street Editor for the Economist Mike Bird Joins ABC News Live to discuss President Donald Trump’s meeting with Chinese President Xi Jinping.

Jon Wolfsthal, the director of global risk at the Federation of American Scientists, joined ABC News Live to discuss why President Donald Trump directed the Pentagon to conduct nuclear tests.

ABC News senior Pentagon reporter Luis Martinez on President Donald Trump ordering the Pentagon to resume nuclear testing on an "equal basis" to other countries' testing programs.

ABC News’ Jonathan Karl discusses his new book detailing the 2024 campaign trail, “Retribution: Donald Trump and the Campaign That Changed America."

President Donald Trump is heading home after announcing a truce in the trade war between the world’s two largest economies following his meeting with Chinese President Xi Jinping.

President Donald Trump and Chinese President Xi Jinping met for their first face-to-face talks in six years in South Korea.

ABC News' Luis Martinez and contributor Mick Mulroy discuss President Donald Trump's order to put the U.S on equal basis with other countries on nuclear weapons testing.

Patricia Kim, a fellow at the Brookings Institution's Center for Asia Policy Studies, says "there are a lot of issues that still need to be worked out" between both countries.

The poll found 45% of respondents "strongly" oppose the East Wing demolition.

President Donald Trump said he is reducing some tariffs on Chinese imports following a meeting in South Korea with Chinese President Xi Jinping.

Trump signaled his administration may find a solution to help fund SNAP.

ABC News’ Linsey Davis speaks with Greenmantle director and China expert Alice Han about President Trump’s first face-to-face meeting with China’s President Xi in six years. 

Pres. Trump hopes to finalize a crucial new trade deal between the U.S. and China.

Michael Sobolik, senior fellow at the Hudson Institute, says negotiations will be complicated between Donald Trump and Xi Jinping with artificial intelligence at the epicenter of these talks.

President Donald Trump appeared to acknowledge Wednesday that he cannot run for a third term, after previously declining to rule out the possibility.

The social media company said it will soon allow users “to trade prediction contracts related to major events and milestones” as the White House denies any conflict of interest.

President Donald Trump landed in South Korea ahead of a high-stakes meeting with China’s Xi Jinping, warning he would impose an additional 100% tariff on Chinese imports if no trade deal is reached.

ABC News' Selina Wang and Alexis Christoforous discuss the impact of potential trade deals between the U.S. and China.

Trump's most anticipated meeting on the three-country tour is with China's Xi on Thursday -- the goal being to end a monthslong trade war.

ABC News' Jay O'Brien reports on the hearing where committee members plan to examine a part of the National Historic Preservation Act.

The Pentagon said it carried out the deadliest day of strikes on suspected drug smuggling boats in the Pacific Ocean, destroying four vessels and killing 14 people.

Donald Trump Jr. has mocked protesters involved in "No Kings" demonstrations across the United States while praising his father's business approach to the Middle East

While addressing U.S. troops in Japan President Trump talked about possibly sending the military into American cities.

President Donald Trump said it's "too bad' that he can't seek a third term in office, touting his "highest poll numbers that I've ever had."

President Donald Trump departs Japan on his way to South Korea where he will discuss trade with China’s president, Xi Jinping. Geopolitical adviser Alice Han joins ABC News to break it down.

California Gov. Gavin Newsom, in an interview with ABC's Jonathan Karl, said he is "deeply concerned" about President Trump and his allies comments on a third term.

The House speaker said he doesn't "see a way to amend the Constitution" to allow for President Donald Trump to seek a third term in office.

President Trump's social media company, Trump Media and Technology Group, has announced it will launch a prediction betting marketplace on Truth Social.

Japanese Prime Minister Sanae Takaichi gifted President Trump the putter of late Japanese prime minister Shinzo Abe during his visit to Tokyo.

Attorneys for President Trump are appealing his criminal hush money conviction, telling a New York appellate court that his trial was "fatally marred" by faulty evidence.

The president is in Japan, where he met with the country's newly elected prime minister as he threatens to deploy additional military forces to U.S. cities.

The granddaughter of President Donald Trump will be making her LPGA debut next month in The Annika at Pelican Golf Club in Florida

Gov. Gavin Newsom tells Jon Karl he’s “deeply concerned” about Trump and adviser Steve Bannon referencing a possible 2028 presidential run.

ABC’s Matthew McGuire, former U.S. executive director of the World Bank, breaks down what’s on the agenda, including tariffs, U.S. farmers, rare earth minerals, TikTok and more.

It's another appeal to the justices over Trump's view of presidential control.

Legal and presidential history experts James Sample and Mark Updegrove weigh in on President Donald Trump’s remarks about a potential 2028 run, including possible workarounds to the 22nd Amendment.

Donald Trump berated Mike Pence, calling his then-vice president a "wimp" during their final phone call on Jan. 6, 2021.

White House correspondent Karen Travers discusses President Donald Trump's Asia trip, including dancing in Malaysia, trade deals with Malaysia and Cambodia, and meetings with Japan and China.

Speaking with reporters on board Air Force One on Monday, President Donald Trump again refused to rule out a bid for a third presidential term.

Donald Trump berated Mike Pence, calling his then-vice president a "wimp" during their final phone call on Jan. 6, 2021. ABC News' Jonathan Karl has exclusive details in his new book, "Retribution."

The trip will culminate with a high-stakes face-to-face meeting between President Donald Trump and China’s Xi Jinping as tensions over tariffs reach new heights.

Speaking with reporters on board Air Force One on Monday, President Donald Trump again refused to rule out a bid for a third presidential term.