H.R. 684: The Marketplace Fairness Act. This is the House version of the Tax bill.
Log on to POPVOX and tell your Rep how you want them to vote on this issue.
If you think that Popvox is a worthwhile effort I can sell you a bridge.....
Sorry, but the only way to get your voice to a congress is direct, signed mail with a postmark and address confirming that you are a constituent. Use a stamp.
Do not use a form letter.
Email is too easy for groups to spam.