Weekly Standard editor Bill Kristol on Sunday called on presumptive Republican presidential nominee Mitt Romney to follow in his father's footsteps and release more than just one or two years of tax returns.

"He should release the tax returns tomorrow," the neoconservative pundit told Fox News' Brit Hume. "It's crazy. You've got to release six, eight, ten years back tax returns."

"Take the hit for a day or two," Kristol recommended. "He has to give a big speech in defense of capitalism, and that will elevate, I think, this race above this tactical back in forth, which I do think he's on the margin of losing."

In a series of interviews on Friday, Romney repeatedly insisted that he would not release more than his 2010 and 2011 tax returns, even though his own father set a standard of releasing 12 years of returns.

"We'll put out the next year of tax returns as soon as the accountants have that ready," the candidate told CNN. "And that's what we're going to put out."

"And those are the two years that people are going to have. And that's all that's necessary for people to understand something about my finances."

Watch this video from Fox News' Fox News Sunday, broadcast July 15, 2012.