“I’m launching an exploratory committee for president.” Senator Elizabeth Warren could be fighting President Trump for the keys to the White House in 2020. But the two already have a long history of trading barbs. “She is a ‘goofus.’” “Wannabe tyrant.” Here’s how Elizabeth Warren has faced off against Donald Trump. In the 2016 election, Warren gleefully played the role of attack dog for the Democrats, taunting Trump on Twitter and in speeches. “A small, insecure money-grubber who doesn’t care who gets hurt, so long as he makes a profit off it. Donald Trump is worried about helping poor little Wall Street. Let me find the world’s smallest violin to play a sad, sad song.” After Trump went after a federal judge because of his Hispanic heritage — “He’s a Mexican. We’re building a wall between here and Mexico —” it was Warren who went on the attack. “Trump is picking on someone who is ethically bound not to defend himself. Exactly what you would expect from a thin-skinned racist bully.” And at the Democratic National Convention, Warren told liberals that Trump had ripped off ordinary Americans. “But he filed business bankruptcy six times, always to protect his own money, and stick the investors and contractors with the bill. And for one low, low price, he’ll even throw in a goofy hat.” But it was her fight with Trump over her claim of Native American heritage that got the most attention. “And Massachusetts is represented by Pocahontas, right? Pocahontas. They call her ‘Pocahontas.’ I’ve got more Indian blood in me than Pocahontas, and I have none. I mean — sadly, I have none. But I have more than she does.” “Hi. This is Elizabeth Warren.” Trump’s unrelenting mockery prompted Warren to release the results of a DNA test that she says is proof of her ancestry. The announcement largely backfired. She apologized to the Cherokee Nation for taking the DNA test. “My mother was born in eastern Oklahoma.” But the feud between Warren and Trump continues. “President Trump’s actions and instincts align with those of authoritarian regimes around the globe. He embraces dictators of all stripes. He cozies up to white nationalists. He undermines the free press and incites violence against journalists.” As the 2020 presidential race heats up, one thing is clear — the skirmishes could get nastier.