main street businesses. (Credit: U.S. Senate) <a href="http://i.i.com.com/cnwk.1d/i/tim/2011/11/09/durbin2_270x192.jpg">http://i.i.com.com/cnwk.1d/i/tim/2011/11/09/durbin2_270x192.jpg</a> It was introduced by Sens. Mike Enzi (R-Wyo.), Lamar Alexander (R-Tenn.), and Dick Durbin (D-Ill.) and is backed by Wal-Mart, Best Buy, Home Depot, and other companies that have stores in nearly every state and are currently required to collect sales taxes in both their physical and virtu