The extent to which they could use this against you is to tell you that you can't claim a charitable deduction for making contributions to these tea party organizations. This isn't quite the jack-booted thugs trampling over your liberties which you seem to imagine. Problematic, certainly, but let's try to have at least a little perspective here.
It never ceases to amaze me how many people see something like this situation, and voice an opinion that basically states:
"I can conceive of a possible worse situation than what we currently have, so let's not bother doing anything about it until it gets to be equivalent to that worse situation."
The problem with this, of course, is that it's ALWAYS possible to conceive of a worse situation than what we're currently in.
Imagine if we did that with our health:
"Well...I'm getting a bit overweight, but I don't need to start exercising, because I'm not dead yet."
"Well, I know I stink, and I'm always short of breath, but I don't need to quit smoking, because I haven't been diagnosed with inoperable lung cancer yet."
Once we get to the point of the worse situation, it's frequently too late to do anything about it.