Why would Bush question it? No one but us and a few others seem to care. Most of the conservative media thinks it’s a joke, or ignores it, as does the RNC. Besides, there is NO way to prove a negative (why doesn’t Bush give Obama the brush-off).
Because he is, "THE PRESIDENT OF THE UNITED STATES", and in that position as, "leader of the free world", he is charged with ensuring the nation he swore to defend is not ruled by a man who is ineligible to assume the office. This issue, above all other, rises to the level of everything we hold constitutionally sacred. If a sitting President can't/won't defend the sanctity of the highest office in our country his presidency is not only traitorous, it makes fools of all that voted for him -- TWICE!