It looks like the 2020 Democratic presidential campaign—specifically Elizabeth Warren's steady rise in the polls and increasingly large crowds—is getting American CEOs nervous about their take-home. On Tuesday, Mad Money host Jim Cramer discussed Wells Fargo's struggle to find a new, permanent CEO on Squawk on the Street. He asked, perhaps rhetorically, "How is it possible that this company cannot find a CEO? I mean, are they worried about Elizabeth Warren attacking?" He went on to say that executives are "fearful of her winning" before adding, "She's gotta be stopped."

In 2017, then-Wells Fargo CEO Tim Sloan appeared before the Senate in the wake of numerous scandals the bank had faced, including overcharging veterans and fabricating more than 2 million fake accounts to fluff sales numbers. Massachusetts senator Elizabeth Warren was bluntly critical, telling Sloan, "You should be fired."

Cramer, who said he favors CEOs, channeled the anxiety of Wall Street. "Look, I've got to tell you, when you get off the desk, you talk to executives, they're more fearful of her winning," he said. "I mean, I never heard anybody say, 'Look, she's gotta be stopped! She's gotta be stopped.' I don't know, she's very—she keeps going up in the polls." Warren took it as an unqualified endorsement, tweeting the video out with the caption "I'm Elizabeth Warren and I approve this message."

It's not just Warren's focus on banks' bad behavior that could spell trouble for America's executives. A new study by French economists Emmanuel Saez and Gabriel Zucman, both professors at the University of California, Berkeley, found that if Warren's proposed wealth tax had been in place as early as 1982, then the 15 richest Americans would be worth half of what they are today. Per Bloomberg: