Tax paid by who? A selective "group?" This should not even be an issue. I do not want MY tax dollars usurped to government lawyers to "protect" a special interest. This is not the realm of education, or government. You can finance any fight you want, but can't suck local tax dollars, ship it to D.C., then re-distribute it to advance a cause. Do it on your own dime.
The purpose of govm't is to protect rights, not some etherial generalization titled, "special interests." In particular to protect the rights of the individual from any and all others who act to infringe upon them.