The Donald was clearly peeved that Jeb Bush came after him in the debate on eminent domain, so he went out on the attack Monday morning, doing a lot of the usual name-calling he does, but also attacking Bush’s support for Common Core:

As he took questions Monday in Salem, New Hampshire, Trump further ripped into Jeb Bush for taking a more moderate position on Common Core and illegal immigration. Bush said last week that the federal government should have “no role” in the creation of educational standards, but Trump warned his supporters otherwise.

“And he’s in favor of Common Core because he’s not a smart man,” Trump said after calling Bush a child.

Trump added:

“He’s in favor of Common Core. Think of it: He wants your children to be educated through Washington. And not smart. And you remember his famous statement about how … illegal immigration’s ‘an act of love.’ These are the kind of people we have in government largely. I mean, he’s an example of a real stiff. But these are the people we have.”

“The last thing we need is another Bush,” Trump said.

He continued attacking Bush throughout his event.

“You have to go out and vote tomorrow,” he said at one point. “You have to do it. Because we have to get rid of the Bushes of the world. Guys like that will never straighten out this country. They’ll never straighten out the country. They’re weak, they’re ineffective, and it’s just not going to happen.”

Bush fired back at Trump on Twitter:

.@realDonaldTrump, you aren’t just a loser, you are a liar and a whiner. John McCain is a hero. Over and out.

— Jeb Bush (@JebBush) February 8, 2016

Maggie Gallagher is a senior fellow at the American Principles Project.