Appearing on ABC News’ “This Week,” Castro remarked that he could support Ocasio-Cortez’s suggestion, adding, “Oh, I can support folks at the top paying their fair share … There was a time in this country where the top marginal tax rate was over 90%, even during Reagan’s era in the 1980s it was around 50%.”

Castro, the former mayor of San Antonio, Texas, urged “that we get more serious about making sure the corporations pay their fair share. He continued, “During this campaign, if I run, I’m going to be very up front with the American people on how we would do that because I think that they are owed that, but it is worth it. It is worth it in this country for us to do that,” he said, vowing not to be “a single issue candidate.”

In 2015, Democratic presidential candidate Bernie Sanders, never averse to raising taxes, also brought up the Eisenhower tax rates during the Iowa presidential debate. Sanders was asked about tax rates, “Well, let’s get specific, how high would you go? You’ve said before you’d go above 50 percent. How high?” He responded, “We haven’t come up with an exact number yet, but it will not be as high as the number under Dwight D. Eisenhower, which was 90%.”

But as the Tax Foundation explained in 2017, it is true that the top federal income tax rate was 91% for most of the the 1950’s, but the top 1% of taxpayers in the 1950s only paid about 42% of their income in taxes. The Tax Foundation explains that the 91% bracket of 1950 only applied to households with income over $200,000, the equivalent of roughly $2 million today. Additionally, the high tax rate only applied to income above $200,000, not to every single dollar earned.