Real estate mogul Donald Trump unleashes a brutal and false attack ad against Sen. Ted Cruz (R-Tx.) for his previous comments on immigration.

The ad accuses Cruz of supporting amnesty in the past and starts with with a clip of Fox News anchor Bret Baier grilling Cruz over his amendment to the 2013 Gang of Eight bill that would have stripped the citizenship provisions of the bill but left the legalization aspects intact. The ad then pivots to Cruz advocating for his amendment on the Senate floor, and then back to his interview with Baier in which Cruz tried to explain that his amendment wouldn't allow illegals to stay in the country.

"Yeah, right, Ted," the ad reads.

The video switches to Trump providing statements on immigration.

"People want to take back their country. We want to do it a humane but we have to have a country," Trump said. "We don't have a country right now. We have people pouring in. They're pouring in and they're doing tremendous damage. If you look at the crime, if you look at the economy, we want to have borders. To have a country you have to have borders. We don't have borders right now."

The ad, of course, is false, as Cruz's amendment was a poison pill to try and sink the Gang of Eight bill. Trump has had his own flip-flops on immigration, as in 2012 he said:

Romney’s solution of “self deportation” for illegal aliens made no sense and suggested that Republicans do not care about Hispanics in general, Trump says.

“He had a crazy policy of self deportation which was maniacal,” Trump says. “It sounded as bad as it was, and he lost all of the Latino vote,” Trump notes. “He lost the Asian vote. He lost everybody who is inspired to come into this country.”

The GOP has to develop a comprehensive policy “to take care of this incredible problem that we have with respect to immigration, with respect to people wanting to be wonderful productive citizens of this country,” Trump says.

The ad, of course, is false, as Cruz's amendment was a poison pill to try and sink the Gang of Eight bill.

There's also this tweet from 2013:

However, Trump has a penchant for playing fast and loose with the facts and getting away with it, so his ad may be effective against Cruz.