But their grasp of the Constitution itself is pretty tenuous.
For instance, they - for some obscure reason - hate the 17th amendment (the direct election of Senators by the people rather than the state legislatures). For them, the 17th amendment (and presumably all the amendments aside from the 2nd) is unconstitutional in its alteration of the document forged in Philadelphia in 1787. Amendments are BAD. Unless they are conservative amendments like a balanced budget amendment, which is GOOD.
Meanwhile, they argue for a balanced budget amendment despite the fact that the GOP has one single unifying policy: disastrous tax cuts that decimate state budgets and create huge shortfalls and painful budget cuts.
They also want to establish Christianity as the national religion. Which Christianity would that be? Would it be tax supported? And what of that whole pesky first amendment?
The amount of cognitive dissonance in the Tea Party should be enough to drown out the voice in their head....but apparently not.