"Cutting off your nose to spite your face." / Pyhric Victory.

If you push to hard you will get a rebound that will erode the Tea Party and Republican Party.

I'm sure that one of the Republican Parties selling points is its fiscal and budgetary strength. This will be tarnished severely if they cause damage to the markets. In Aus in the early eighties we had a similar scenario and it essentially caused such a massive electoral backlash it meant the left held Federal power for a dozen years.

In other words you might motivate the non voters to get up and vote democrats for a decade.