President Donald Trump on Friday blasted California Lieutenant Governor and gubernatorial candidate Gavin Newsom for supporting universal health care for illegal immigrants, asking, “What happens if the whole world decides to go to California?”

Speaking at a North Carolina event, Trump said Newsom wants “health care for everyone. He wants everything for everyone. He wants to open up the borders. He wants to take care of everyone.”

“And I was just saying, what happens if the whole world decides to go to California?” Trump continued.

Trump said Newsom’s plan means “they’re going to take care of the whole world.”

“Where do you stop?” Trump asked. “You’re going to take care of a lot of people, but they’re not going to be able to do it for very long because it’s not going to work.”

Earlier this week, Newsom said he would like to extend San Francisco’s universal healthcare plan for illegal immigrants that he ushered in when he was mayor to the rest of the state.

“I did universal health care when I was mayor. Fully implemented, regardless of pre-existing conditions, ability to pay, and regardless of your immigration status,” Newsom said. “San Francisco is the only universal health care plan for all undocumented residents in America. Very proud of that. We proved it could be done without bankrupting the city. I’d like to see that extended to the rest of the state.”

Newsom also claimed on Twitter that offering universal health care to illegal immigrants is “the economically smart thing to do.”

“If we don’t offer coverage to everyone – regardless of income or immigration status – we will still carry the expense,” Newson said. “Universal access isn’t just the right thing to do – it’s the economically smart thing to do.”