Former Republican presidential candidate Newt Gingrich argued on Sunday that allowing unlimited campaign contributions was a necessary step to "equalize" the middle class with the rich.

Last week, the Supreme Court followed it's controversial Citizens United decision, which allowed corporate spending in elections, by striking down the total limit that donors could contribute during elections.

"It is a big deal because it means that people can give to scores of campaigns," Gingrich told a panel on ABC News. "It's part of a continuum. It started a long time ago when they said that speech included money, which is the original decision. You, as a billionaire or millionaire, could go out and spend your own money. Of course, speech is money."

"What's happen is that you've gone from that original decision to Citizens United, which said in effect that corporations could give, and created super PACs."

Last week's decision struck down limits on the total amount of contributions that donors could make over a two-year period, but it left in place limits to individual campaigns.

Gingrich asserted that the next step would be to allow candidates to accept unlimited donations.

"And you would overnight equalize the middle class and the rich," he declared.