Election 2024 updates: Michelle Obama to speak at DNC this week

The Harris campaign went on the offensive against former President Donald Trump Wednesday following his speech on the economy, saying he does not care about working families.

"During what was billed as a speech about his economic vision, Donald Trump said he’s 'not sure the economy is the most important topic' -- because when you're running to slash taxes for rich donors and corporations it's easy not to care about the working families and middle-class Americans who get hurt as a result," Harris campaign spokesperson Ammar Moussa said in a statement to ABC News.

Trump delivered remarks Wednesday at Harrah's Cherokee Center in downtown Asheville, North Carolina.

"The choice this November is clear: Building up the middle class will be the defining goal of Vice President Harris' presidency -- that's why she’s focused on lowering costs for working families, holding greedy corporations accountable, and creating opportunity for all Americans," Moussa said.

Robert F. Kennedy Jr. has officially appealed a New York judge's ruling that he cannot appear on the state's ballot because he misrepresented his place of residence on his nominating petition forms.

In the appeal, RFK Jr. called the judge's ruling "an assault on New York voters who signed in record numbers to place me on their ballot."

The independent presidential candidate went on to call the Democratic party "unrecognizable."

"The party of my father and uncle’s time was committed to expanding voters' rights and understood that competition at the ballot box is an essential part of American Democracy," RFK Jr. said in the appeal.

"The DNC is now a party that uses lawfare in place of the democratic election process," he added.

CBS News on Wednesday said it has invited the 2024 vice presidential nominees to debate.

The network said it provided four dates as options to the campaign. Democrat Tim Walz indicated that he'd agreed to one on Oct. 1.

"See you on October 1, JD," Walz wrote on X.

A Harris campaign official said: "Harris for President has accepted CBS' invitation to a Vice Presidential Candidate Debate on October 1. Governor Walz looks forward to debating JD Vance -- if he shows up."

-Isabella Murray and Hannah Demissie

Trump briefly mentioned two new policies he's proposed in recent weeks: eliminating taxes on tip wages and on Social Security benefits for seniors.

"With your vote, I will end this injustice and I will always protect Social Security and Medicare for our great seniors," he said.

But he did not offer further details of either policy. Some experts have warned his Social Security proposal could hurt the program by cutting down a funding source at a time when it faces solvency issues.