Although Bush has experience as a governor and received high marks, his stand on amnesty, preference of Mexico over the U.S., support of Common Core and other reasons make him unacceptable. Rubio likewise is unacceptable. He has no experience, no accomplishments - an empty suit. He supports amnesty and has too many potential scandals.
Rubio with his slick, memorized answers seems more like a cross between Pillsbury Doughboy and a used care salesman than POTUS.