MILFORD, New Hampshire – Donald Trump says Democrats will “sue his ass off” if Sen. Ted Cruz receives the Republican nomination for president. Cruz faces questions over his “natural born citizen” status and his eligibility to serve as the nation’s commander-in-chief.

Speaking to a standing-room-only crowd of 5,000 here at the Hampshire Hills Athletic Club, Trump reminded voters Cruz was born in Canada to an American citizen mother and a Cuban born father who was not yet an American citizen at the time of his son’s birth.

“I think I know why [Cruz engaged in controversial campaign tactics],” Trump told the crowd. “Because he was born in Canada.”

“Happens to be a problem,” he noted.

“You watch, the Democrats have already said, they’re going to sue him. He gets the nomination, they’re going to sue his ass off,” Trump said.

“Actually, they’re going to sue the country, but they’re going to sue him, that’s a big problem,” he added.

The GOP front runner, who leads his nearest rival in New Hampshire in the polls by 20 points, also said that if the United States is attacked by somebody while he is president, “we’ll bomb the sh*t out of them.”

The event had a festive atmosphere, “like a football tailgating party,” Boston talk radio king Howie Carr told Breitbart News.

Carr broadcast the last three hours of his daily radio program, from 4 pm until the event began at 7 pm, from the “media pen” where the event was held. Donald Trump called in to the show at 3:50 pm, just as he was leaving Trump Towers in New York City for the airport to come to the event on his private jet.

Best-selling author Ann Coulter added star power to the event, appearing on Carr’s show for a full hour, from 5:30 pm to 6:30 pm before moving to the main stage to address the crowd.

Coulter was followed by former Sen. Scott Brown, who formally endorsed Trump at a separate press conference just minutes before going on the main stage to introduce the New York City real estate billionaire.

Trump seemed unruffled by his second place finish to Cruz at the Iowa GOP caucuses Monday night, but was more than a bit perturbed at the media’s characterization of Iowa’s third place finisher, Sen. Marco Rubio, as the “real winner” of the caucuses. Trump also blasted Cruz’s campaign team for spreading false rumors Monday evening as the Iowa caucuses began that Dr. Ben Carson had dropped out of the race.

“Carson, he said, left Iowa. He’s out of the race.”

“He [Cruz] said he [Carson] left Iowa. Carson’s a nice guy, Ben. So Ben, all of a sudden, is getting calls that he quit the race. These guys [with Cruz] said he quit the race. He’s gone, he’s out. Send your votes to him [Cruz],” Trump said.

“What kind of people are we dealing with here?” Trump asked. On Tuesday, Cruz apologized to Carson for the conduct of his supporters.

Trump then hit Cruz for the use of a controversial mailer in Iowa.

“Then he makes up a thing, that’s like on a government document. ‘Voter Violation’ it says on top. Just like it comes right out of government. ‘Voter Violation.’ And it gives grades: F, F, F, F. You haven’t voted. And it says, you can go vote, but you’ve got to go vote for him [Cruz],” Trump said.

“What kind of people are these people?” Trump asked.

Trump also criticized Cruz for claiming that the billionaire supports Obamacare.

“By the way,” Trump told the crowd, “I have opposed Obamacare since they day they conceived it. And Ted Cruz comes out with an ad that I’m in favor of Obamacare. Can you believe this? Just like he did with Carson,” Trump said.

“I’ve been talking about, since Day One, we’re going to repeal and replace Obamacare,” he added.

“These are dishonest people, these politicians. They’re worse than real estate people in New York, I’m telling you,” Trump said.

In Iowa, Trump claimed, he had one of the lowest cost per vote cast of all the candidates, while Jeb Bush, at more than $2,800 per vote cast had the highest.

Trump used that claim to transition into a critique of the current costs of the American educational system

Americans pay the most per student of any country in the world, he said, but get some of the poorest results in the developed world, slipping recently from 28th place in educational achievement of its students to 30th place.

The first-in-the nation New Hampshire primary will be held next Tuesday, February 9.