Speaking at a rally in Norwalk, Iowa Wednesday morning, Trump went on an extended riff against Cruz, hitting him on being born in Canada and failing to disclose a Goldman Sachs loan during his first Senate campaign.

“What’s he going to do, be rough on Goldman Sachs when he’s got a personal guarantee for like whatever the number was, a million dollars?” Trump said of Cruz’s undisclosed loan. “So I think you gotta think about that. .. And he said with the being a Canadian citizen he said, ‘Oh I didn’t know that.’ How did he not know that? Then he said with the loans, ‘Oh, I didn’t know that.’

On Tuesday, Iowa Governor Terry Branstad said he doesn’t want Cruz to win, and former Cruz supporter Sarah Palin endorsed Trump for president.

Earlier in the primary season, Cruz and Trump had been nice to each other, but the “bromance” ended when the two became closer in the polls.

This article was originally published on Time.com.