The Ban on Deceptive Unsolicited Bulk Electronic Mail Act of 2003 was introduced by Sen. Bill Nelson (D-FL) in May 2003. It would prohibit the inclusion of false information in message headers in unsolicited bulk commercial e-mail. It also would require senders of unsolicited bulk commercial e-mail to include opt-out instructions and honor opt-out requests, and would prohibit them from harvesting e-mail addresses of potential recipients from web pages and other sources. Violations of the law could be prosecuted under RICO.