You're saying "We paid for OUR congresscritters fair and sqaure. And who are you to try to subvert the laws we bought?"
There are, of course, many ways to change the law. One way is to make bad laws unenforceable. For example, restaurants could play non-ASCAP music and then sue the hell out of the ASCAP agent personally for all kinds of things and ruin them financially. There is no reason to be nice, or even fair, to these worms. After all, the ASCAP plays hardball too.
That's exactly what you should do. Don't play anything affiliated with ASCAP.
But if you do play something affiliated with ASCAP, by doing so, you are necessarily agreeing to their terms or you are playing their music illegally.
P.S. I'm puzzled thinking about what you would sue the ASCAP agents for.