Has Frist Made The Case For 2008?

Senator Bill Frist will retire from Congress at the end of the year, and he’s widely rumored to be considering a run for the Presidency in 2008. Last year, Frist had plenty of critics, including me, for failing to get judicial nominations or much of the original agenda through the Senate. Now, however, Frist appears to be firing on all cylinders. He has pushed through the detainee bill, a border barrier, and the on-line federal budget database, among other accomplishments. Some of these bills appeared to have little chance of avoiding filibusters and delaying tactics, but the tall Tennessean worked some magic, or twisted some arms, to get real accomplishments out of this session.
Here’s a question for CQ readers: has Frist’s valediction made the case for a 2008 run at the Presidency?