Election 2024 updates: Trump campaign claims it was hacked by 'foreign sources'

Former President Donald Trump said he has agreed to an offer from ABC News to debate Vice President Kamala Harris on Sept. 10.

He said so during a news conference at his Mar-a-Lago Club on Thursday.

Trump previously said he had been willing to go toe-to-toe with President Joe Biden and agreed to ABC News' first invitation issued in May.

However, after Biden dropped out of the race last month and Harris became the presumptive Democratic nominee, Trump had implied he would not debate Harris on ABC.

Harris has accused Trump of "running scared" and trying to back out of the debate.

-ABC News' Katherine Faulders and John Santucci

Harris and Walz will attend a campaign event with United Auto Workers members in Wayne, Michigan, which represents Ford’s Michigan Assembly Plant Thursday afternoon, the campaign said.

Upon arrival, they will be greeted by President Shawn Fain and UAW board members, according to the campaign, before they deliver brief remarks.

The union endorsed Harris for president on July 31 after it had previously endorsed Biden.

This stop is their only campaign stop before heading to Phoenix, Arizona, for a rally on Friday.

-ABC News' Gabriella Abdul-Hakim, Fritz Farrow and Will McDuffie

Reps. Jason Crow, D-Colo., Jake Auchincloss, D-Mass., and Mikie Sherrill, D-N.J., who are all veterans, defended Gov. Tim Walz Thursday following attacks on his service by Sen. JD Vance and other Republicans.

Crow said the attacks coming from Republicans are "old and tired."

"They have no options but to try to do one of the worst things you can do in America, that is to attack a veteran for their service," he said adding, "We're not going to put up with it."

Auchincloss said the Trump and Vance ticket doesn't represent the values of veterans.

"I thank JD Vance for his service, but his political career and his political positions are antithetical to the values of veterans, and Donald Trump has a long track record of disparaging veterans," he said.

Sherrill said the Harris-Walz ticket is "fantastic" and one that "veterans can get behind, because we know they will continue to fight to support our veterans with legislation like the PACT Act."

Thursday marked the second anniversary of the PACT Act, which provides health care and benefits for millions of veterans injured by exposure to toxins.

-ABC News' Lauren Peller

Former President Donald Trump announced via social media that he would hold a "general news conference" slated for Thursday afternoon.

The announcement comes as Vice President Kamala Harris and Minnesota Gov. Tim Walz are campaigning in Michigan amid a battleground state blitz.

Trump's last outing on the campaign trail was in Georgia on Saturday, although he has done media interviews this week.

Republican vice presidential nominee Sen. JD Vance -- also campaigning in battleground states this week -- has been critical of Harris for not talking to the media since becoming the Democratic nominee. During his battleground state visits, he's taken several questions from the press, attempting to draw contrast with Harris.

Trump also mentioned Harris' lack of media appearances, suggesting it's because "she is unable to answer questions."

-ABC News' Kelsey Walsh