On a side note, I don't understand what all the fuss is about with regard to this VP thing. If we're willing to assume that (1) Hillary can get elected president and (2) she's willing to do so for the sole purpose of letting BJ be president again -- both of which we have to assume for this ascension-from-vice-president scenario to take place -- then he can act as President without ever having to assume either office. (She can just let him make all the decisions without the title.) I don't think either of those assumptions is justified, but if some people do, I can't understand why they're getting upset over whether he could get the TITLE back.
Because the title is the office as defined by the Consitution.
Bill Clinton is a carpetbagger extraordinaire, and I don't want him carpetbagging the Constitution again during my lifetime.