My short answer to Senator Cornyn's email to me:

[Th1onein]

Your values are not MY values, and they are not the
values of MOST Texans, you dirty NEOCON. Don't write
to me again. I don't know how you got my email
address in the first place, but get me off of your
mailing list!

[Warpy]

1. I just kept bouncing email from Heather Wilson (R-COW)

so that it looked like my address was bogus.

Incredimail is one program that has this feature. There are others.

Bouncing spam back where it came from cuts down on the amount of it, but it generally takes a month or so.