Sen. Elizabeth Warren (D-Mass.) stood her ground on her plan for a wealth tax on Tuesday, saying that billionaires should be able to pitch in 2 cents “so every other kid in America has a chance to make it.”

“So, I think this is about our values as a country. Show me your tax plans, and we’ll know what your values are,” she said at the Democratic presidential debate hosted by CNN and The New York Times in Westerville, Ohio.

The candidates were asked about supporting a wealth tax on billionaires, a plan that only Warren and Sen. Bernie Sanders (I-Vt.) have proposed and openly advocated for. Warren’s plan would impose a 2% tax on households with net worths of more than $50 million, with an additional 1% on wealth above $1 billion.

The Massachusetts senator claims the tax plan would cover universal child care, universal pre-kindergarten, billions in funding for historically black colleges and better teacher pay. But more moderate Democrats have shied away from the proposal, fearing it wouldn’t win them the election.

“My question is not why do Bernie and I support a wealth tax,” Warren said. “It’s why does everyone else on this stage think it’s more important to protect billionaires than it is to invest in an entire generation of Americans?”