I don't have a clue what his position is on illegal immigration.
What has Santorum done about immigration???
VOTED TO GIVE SOCIAL SECURITY BENEFITS TO ILLEGAL IMMIGRANTS
http://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=105&session=1&vote=00058
VOTED AGAINST HIRING AN ADDITIONAL 1,000 BORDER PATROL AGENTS, paid for by reductions in state grants.
http://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=109&session=1&vote=00179
How does THAT suit ya???
Also, it's better to attempt conservative legislation, like the Sensenbrenner Immigration Reform Bill, or HR2520 The Patients Choice Act & fail than to compromise on something like McCain/Kennedy or Obamacare.