Walz-Vance debate: Candidates tangle in wide-ranging debate

When asked why Walz previously said he was in Hong Kong during the Tiananmen Square massacre, Walz only glancingly responded, only saying that he's "a knucklehead at times" and that his extensive travel to China "is about trying to understand the world, it's about trying to do the best you can for the community."

When pressed further, he conceded that he "misspoke" and that he was in Hong Kong the year of the massacre but not at the time it happened.

Walz repeatedly poked at Vance's past criticisms of Trump and now the CBS moderator is asking him to explain

"Because I've always been open and sometimes, of course, I've disagreed with the president but I've also been extremely open about the fact that I was wrong about Donald Trump," Vance said.

Vance blamed the media for its coverage of Trump and then said he changed his mind in part because of Trump's record in office.

Both candidates were asked how their economic plans would avoid ballooning the deficit by trillions of dollars, citing projections by the Wharton School.

Walz said their plan is "simple."

"Kamala Harris has said to do the things she wants to do, we'll just ask the wealthiest to pay their fair share. When you do that, our system works best, more people are participating in it, and folks have the things that they need," he said.

Vance pushed back against the analysis.

"A lot of those same economists attack Donald Trump's plans, and they have PhDs, but they don't have common sense and they don't have wisdom," Vance said, citing Trump's record on tax cuts.

The Penn Wharton Budget Model has estimated that Trump's tax and spending proposal will cause tax revenue to fall by $5.8 trillion and produce a similar amount of primary deficit over the course of a decade.

Vance lashed out at the experts, saying not to trust them but to trust "common sense."

"A lot of the same economists attacked Donald Trump's plans and they have PhDs but they don't have common sense and they don't have wisdom," he said.

Walz immediately pushed back on Vance.

"Economists can't be trusted. Science can't be trusted. National security folks can't be trusted. If you're going to be president, you don't have all the answers. Donald Trump believes he does. Pro-tip of the day is this, if you need heart surgery, listen to the people at the Mayo Clinic in Rochester, Minnesota, not Donald Trump," Walz said.