Hours before the House Appropriations Committee held a hearing on political targeting at the Internal Revenue Service, Sen. Ted Cruz (R-Tex.) had a simple solution to the agency's problems — get rid of it altogether.

"I think we ought to abolish the IRS and instead move to a simple flat tax where the average American can fill out taxes on postcard," he explained in a Fox News interview over the weekend. "Put down how much you earn, put down a deduction for charitable contributions, home mortgage and how much you owe. It ought to be a simple one-page postcard, and take the agents, the bureaucracy out of Washington and limit the power of government."

Cruz proposed a flat tax during the 2012 election, but he said he would keep a standard deduction for lower-income earners, as well as deductions for mortgage interest and charitable donations.

Former Rep. Ron Paul (R-Tex.) has frequently called for the abolition of the IRS. He would have gone further than Cruz by also eliminating the income tax.