Check out Thompson's pitch at left. "Folks, America's economy is struggling, and Congress is about to make it a whole lot worse," he says, warning of the "massive, automatic tax increase" to come if the cuts aren't extended.
Thompson suggests that income taxes could then increase "10 percent or more," while taxes on capital gains will increase 30 percent and taxes on dividends will more than double.
The effects of not renewing the cuts, he says, will be "devastating."
Republicans and some Democrats (including three senators) are pushing for an extension of all the cuts, andif that happens because lower taxes spur economic growth.
According to Fox News' Chris Wallace, extending the cuts for high earners would. Many Republican-leaning voters, particularly those associated with the Tea Party movement, have expressed frustration about the size of the deficit and national debt.
Under the Obama administration plan, the 0.7 percent of married, jointly-filing Americans who make more than $373,650 would see their marginal tax rate increase from 35 percent to 39.6 percent, according to the Tax Policy Center. For the 1.2 percent making between $209,251 and $373,650, it would increase from 33 percent to 36 percent.
The Thompson ad is currently running on Fox News Channel and elsewhere.
"A massive tax increase in the midst of the worst recession since the Great Depression would be cataclysmic to our nation's broken economy," Bob Adams, executive director of the League of American Voters, said in a release touting the spot.