Vermont Sen. Bernie Sanders wouldn’t mind hiking taxes to an eye-popping 90 percent for wealthy Americans.

The socialist lawmaker — running against Hillary Clinton in the 2016 Democratic primary — told CNBC that he could get behind exploding tax rates back to levels not seen since the 1950s.

“[When] radical socialist Dwight D. Eisenhower was president,” Sanders said in an interview with John Harwood, “I think the highest marginal tax rate was something like 90 percent.”