The Twelfth Amendment is pretty clear. It is the amendment that talks about how the Electoral College meets and chooses the pres and veep. The last sentence: But no person constitutionally ineligible to the office of President shall be eligible to that of Vice-President of the United States.
Willard CANNOT be Vice-President - period.
That's it, end of story.
BTW, Not only can BJ NOT ever be a VEEP, he is also precluded from holding any office that's in the line of succession to the presidency.
Of course XII says that.
Here's the entire text of Amendment XXII:
" No person shall be elected to the office of the President more than twice, and no person who has held the office of President, or acted as President, for more than two years of a term to which some other person was elected President shall be elected to the office of the President more than once. But this Article shall not apply to any person holding the office of President when this Article was proposed by the Congress, and shall not prevent any person who may be holding the office of President, or acting as President, during the term within which this Article becomes operative from holding the office of President or acting as President during the remainder of such term.
It would have been very simple to say, "Any person who has served as President for two terms, or for one term plus 731 days, shall be permenently ineligible to the office of President or Vice-President".
But that's not what it says.
It says that WJC "shall not be elected to the office of President".
Now I grant you that the drafters of XXII did not imagine such a creature as X42 being elected once, let alone twice.
But were WJC to run as Kerry's VP (that's not the plan, it's Hillary, but IF) there is no penumbra or emanation of the XXII Amendment sufficient to bar him from office.
Nor to bar his ascent to the Presidency after Kerry's tragic murder by a crazed, right-wing gun nut who just saw "The Passion of the Christ".