IME: email is worthless. canned letters / faxes go in the garbage. A polite phone call may accomplish something. Better yet if you donated or voted for that politician. Even better if you phone banked.

I called my representatives and told them they got $2700 plus several days phone banking from me last election cycle. If they don't get right on this, they're getting $0 next time; I'm not going to have to work too hard to figure out something fun to waste a saved $3k on.

Oh, and if the above bothers you, support public funding of elections. He who pays the bills calls the shots, and all those companies profiting off surveilling the world make a lot of donations.