More shots have been fired in the war of words between Sen. Elizabeth Warren and Donald Trump.
The Massachusetts Democrat called the Republican presidential candidate a "small, insecure moneygrubber" who doesn't care whom he hurts, as long as he can make money.
Warren pointed to comments Trump said in 2007 that he's always made more money in bad markets than in good markets.
"Donald Trump was drooling over the idea of a housing meltdown because it meant he could buy up a bunch more property on the cheap," Warren said. "What kind of a man does that? Root for people to get thrown out on the street?"
"Pocahontas is at it again," Trump said in an email to The Associated Press in response to questions about Warren's remarks. "She scammed the people of Massachusetts and got into institutions because she said she is Native American. She's one of the least successful Senators in the U.S. Senate."
During her 2012 election campaign, when she ousted incumbent Republican Sen. Scott Brown, Warren was criticized after being listed in law school directories as having Native American ancestry.
Warren has dismissed similar criticism by Trump in the past as recycling what she described as "Brown's hate-filled attacks on my family."
The comments by Warren on Tuesday before the Center for Popular Democracy in Washington are the latest in an ongoing battle between Warren and Trump. Earlier this month Warren took to Twitter to bash Trump for his treatment of women and comments he had made about her.
During Tuesday's speech, Warren amplified that criticism.
Warren, a hero to the liberal wing of the party, also faulted Trump for criticizing the 2010 Dodd-Frank Act that sought to overhaul the U.S. financial sector following the recession.
"Donald Trump is worried about helping poor little Wall Street? Let me find the world's smallest violin to play a sad, sad song," Warren said. She accused Trump of "kissing the fannies of poor, misunderstood Wall Street bankers."
She also criticized Trump for saying he would not release his tax returns.
"Maybe he's just a lousy businessman who doesn't want you to find out that he's worth a lot less money than he claims," Warren said. "But we know one thing: the last time his taxes were made public, Donald Trump paid nothing -- zero."
Trump defended his private sector success.
"I borrowed $1 million dollars and turned it into a great $10 billion dollar company in a relatively short period of time," he said. "If goofy Elizabeth Warren could do the same thing for the United States, which she can't, this country would be proud again."