As the Senate prepares to vote on the new United States-Mexico-Canada Agreement (USMCA), Democratic presidential candidates debated whether it was an improvement to the current trade situation and worth supporting.

Billionaire Tom Steyer — who has made climate issues a centerpiece of his campaign — blasted former South Bend, Ind., Mayor Pete Buttigieg for supporting the USMCA without ensuring it has provisions to deal with Climate Change.

ā€œIf climate’s your number one priority, you can’t sign a deal — even if it’s marginally better for working people — until climate is also taken into consideration. Look, I’ve four kids between the ages of 26 and 39. I cannot allow this country to go down the path of climate destruction. Everybody in their generation knows that.ā€

Watch his comments below:

ā€œFranky, Mayor Buttigieg, you’re their generation. I think you would be standing up more. Look, that’s what I’m standing up for. We cannot put climate on the backseat all the time, and say, ā€˜We’re going to sign this one more deal. We’re going to do one more thing,’ without putting climate first.ā€

ā€œThat’s right,ā€ ButtigiegĀ agreed. ā€œThat’s why we’re going to tackle climate from day one. It’s why we’ve got to make sure that we have got better answers than we do today.ā€

ā€œNow what I’ve noticed is, pretty much all of us propose that we move on from fossil fuels by the middle of the century — starting with actions we take right now. The question is: How are we going to make sure any of this actually gets done? Because people have been saying the right things in these debates for literally decades.ā€

Watch his response below:

Steyer has hit Buttigieg for not making climate issues a more significant part of his campaign before, especially given his age.

ā€œYou’re 37 years old. You know, you’re of a generation of people who understand this is the number one issue in front of us,ā€ SteyerĀ saidĀ in December, adding, ā€œā€˜Why aren’t you stronger on climate?’ That, to me, is an absolutely critical question for him to answer.ā€