Gathering for the annual World Economic Forum in the Swiss Alps town of Davos, some of the world’s wealthiest business leaders and so-called “thought leaders” focused their attention Monday on a proposal that’s gaining traction in the U.S.—a return to a far higher marginal tax rate for the wealthy as a way of correcting the country’s widening wealth gap. A majority of American voters support the idea, a fact that was cited by one Davos attendee as precisely why he fears the proposal.

“It’s scary,” Scott Minerd, head of the $265 billion investment firm Guggenheim Partners, told CNBC of Rep. Alexandria Ocasio-Cortez’s (D-N.Y.) proposal of a 70 percent tax rate for income over $10 million per year, predicting that the idea will likely continue to get more of the the attention it’s captured over the past three weeks, since the freshman congresswoman mentioned it in an interview with “60 Minutes.”

“More than 10 years after the collapse of Lehman Brothers, hostility toward the corporate elite is finally hitting the political mainstream in a meaningful way.” —Lionel Laurent, Bloomberg“This is going to gain more momentum,” said Minerd. “And I think the likelihood that a 70 percent tax rate, or something like that, becomes policy is actually very real.”

Another attendee, Blackstone CEO Stephen Schwarzman, sarcastically told CNBC that he is “wildly enthusiastic” about the tax proposal, complaining that the U.S. already has “the second most progressive tax regime in the world.”

Ocasio-Cortez herself showed little sympathy for fearful elites like Minerd and Schwarzman, tweeting her disbelief that the ultra-wealthy are publicly expressing concern over their own financial well-being while nearly half of Americans regularly struggle to afford basic monthly expenses.

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