I couldn't find a link to this on any government web site, including INS, FBI, and DOJ. The closest was
this report "Immigration Offenders in the Federal Criminal Justice System, 2000" from the DOJ which doesn't seem to jibe with the stats you presented. I have no doubt that illegal immigrants are a drain on our economy and our law enforcement, but perpetuating unattributed reports is not going to help get them out of our country. If the report you presented actually exists, let us all lobby the DOJ to put it back up on their web site.