Business mogul Warren Buffet is promising to match any donation Republican members make toward cutting the national deficit. And he upped the ante when it came to Senate Minority Leader Mitch McConnell (R-Ky.), saying he would match the leader's donations three-to-one. His pledge comes after McConnell said that if Buffett is feeling guilty about not paying more in taxes, he should just send in a check. "With regard to his tax rate, if he’s feeling guilty about it, I think he should send in a check," McConnell said on NBC's "Meet the Press" in September.