Here's a word of advice about writing your congressman/woman.
WRITE them. Don't email them, don't call them on the fucking phone. Actually pick up a fucking pen and some paper and write them. I swear to god, when a politician actually gets a hand-written letter they really do read them, if they are legible enough. (No crayons.) Or... there is at least a higher chance of them reading it.
Not like that will help them make up their minds about something. I am far too jaded to believe in that kind of shit.