One way to start would be to have more of a presence at local election agencies, and more of a presence at the polling places on Election Day. Perhaps some Tea Party people in colonial costumes around the polls this November can deter some of the cheating.
Funny. I was just thinking/wondering if I could do this. I don;t think there are any wetbacks voting where I do, but I was wondering if I could send a letter myself to all the voters, saying I was concerned about non-citizens voting and that I would be at the polls to verify the citizenship of everyone walking in. I would ask that everyone bring a US Passport or their birth certificate and some other ID that has the same birthdate as the BC. If someone like Obama showed up I would see to it that his vote was challenged. Objection here, I expect, would be very mild. And so with some TV coverage it might be a useful precedent.
ML/NJ
I hope freepers who can will look into being a poll watcher. It is an easy form to fill out with your Sup. of Elections and they train folks for various jobs. If we don't take part there will be lots more voter fraud taking place...especially in tight races.