Proquest Congressional offers a comprehensive collection of congressional documents from 1789 to the present, including House and Senate Documents/Reports, Congressional Record, legislative histories, CRS Reports, hearings, etc.
Board of Immigration Appeals Decisions http://www.usdoj.gov/eoir/vll/intdec/lib_indecitnet.html
Board of Alien Labor Certification Appeals Decisions
Decisions from 1993 furnished by the American Immigration Lawyers Association
Office of the Chief Administrative Hearing Officer EFOIA Decisions http://www.usdoj.gov/eoir/OcahoMain/ocahosibpage.htm
Board of Alien Labor Certification Appeals Judges' Benchbook
Second Edition - May 1992
http://www.oalj.dol.gov/PUBLIC/INA/REFERENCES