"Frist said most of the Senate's discussion and differences are focused on the temporary worker program.
"There are two aspects," he explained. "One is the true temporary worker program whereby people could come here with the intent of working for a period of time and then going back home. That would apply to agricultural workers, construction workers or hospitality workers - the sort of workers we know are coming and going.
"The other temporary worker component is the 12 million people who are here. That's where the debate really is ... it's not realistic today to send that whole 12 million people back where they came from."
Frist said he doesn't know how many illegal immigrants are in Tennessee.
I bet he DOES know how many votes he needs to win the first presidential primary battle in 2008.