Slashdot.org is keeping track of Congressional bills concerning spyware. Two bills passed the House and are expected to pass the Senate.
"H.R. 29 makes it 'unlawful for any person who is not the owner or authorized user of a protected computer to engage in deceptive acts or practices'. H.R. 744 (I-SPY Act) prohibits accessing a protected system via code copied on to the system to, among other things, disseminate personal information."