He didn't have to worry. He had Trent Lott and several other Republican senators in his back pocket ready to bend over one more time - which they did, at the same time screwing over the House Republicans. Disgusting.
I don't think we will ever know if it was the FBI files or just straight blackmail that made the Senate GOP bend over but I hope that one day we will be told the "why" behind our refusal to allow evidence to be presented and who made the deal.