I don't mean to be rude, but how do you normally receive news about what tea party supporters think? You may not be hearing about it because their ideological opponents haven't figured out a way to label it as racist, yet, since this ultimately effects every single American. Just wait and I'm sure they'll find a way (in case you haven't heard, IRS is the new "N-word", according to MSNBC's Martin Bashir).
Go listen to the horses' mouths in full context and from original sources, as opposed to carefully selected clips meant to destroy and you will find they are being very vocal about it--even this morning, 2 for 2 of the national AM talk shows were covering it (Berry and Limbaugh). I also point to Texas' proposed email protection laws if you want even more evidence of "push[ing] for change".
And please don't take offense, I applaud you for doing exactly what I suggest and asking for a comment from a "horse's mouth". I obviously can only speak for myself, since like Anonymous nobody is recognized to speak for the whole. Anyways, greater merit is bestowed based on actions instead of words, since we have had enough of the political pandering that is systemic in the republican party (if not all of politics; I cite the formation, itself, of the tea party as proof of this).
I must say, though, that I was a little thrown back that this could even be a misconception. After all, you seem pretty clear how much trust I hold in our federal government. lol