Donald TrumpDonald John TrumpTrump rails against impeachment in speech to Texas farmers Trump administration planning to crack down on 'birth tourism': report George Conway on Trump adding Dershowitz, Starr to legal team: 'Hard to see how either could help' MORE slammed Marco RubioMarco Antonio RubioApple under pressure to unlock Pensacola shooter's phones Senators offer bill to create alternatives to Huawei in 5G tech Surging Sanders draws fresh scrutiny ahead of debate MORE on his finances and voting record in the Senate, panning the Florida senator as someone who “lives above his means.” 

“He is a disaster with his credit cards,” Trump said Tuesday during a press conference about his new book. 

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“He has a very bad record of finances, with his houses, he certainly lives above his means, there is no question about that.”

Trump has made Rubio the target of much of his criticism over the last few weeks, as the Florida senator continues to rise at the polls after a praised debate performance. 

Rubio has surpassed former Florida Gov. Jeb Bush, a frequent Trump foil, in a series of polls, and the insults suggest Trump may see Rubio as a growing threat.

Trump laid into Rubio on his immigration record, as well as his current feud with Bush, noting that he doesn’t see how Rubio can win with a “very, very weak” stance on immigration.   

“Marco is overrated. Frankly, had Bush been a better messenger, he has a better message. If it was me delivering that message it would have been a much different story,” he said. 

“Marco doesn’t show up to the United States Senate, he is representing the people of Florida ... the facts are on Bush’s side, and ultimately I think Marco is going to be hurt very badly. “

He also panned Ben Carson, who has recently overtaken him at the top of a handful of national polls. 

“You look at Ben, very weak on illegal immigration, and Ben wants to get rid of Medicare,” Trump said. 

“When a man is weak on immigration and wants to get rid of Medicare, I don’t know how he stays there.”