Senators Durbin & Grassley teamed together to halt abuse of H-1B (so called "TechWorker") Visa program. Here are the links to their press releases.
http://grassley.senate.gov/index.cfm?FuseAction=PressReleases.Detail&PressRelease_id=5380&Month=5&Year=2007
http://durbin.senate.gov/record.cfm?id=274241
The Programmers Guild was instrumental in bringing this to their attention:
http://www.programmersguild.org/
According to their findings a Visa holder is paid, on average, 30% less than the U.S. Citizen doing comparable work at a similar job.
http://www.programmersguild.org/listmessages/2007April_eNewsletter_Microsoft_Jobs.htm
