He will most likely vote yes, but he is a slippery snake, Rubio should simply not be trusted.

After the whole DACA affair with him, and his very very late outline of his watered down dream act, which had a 28 year old age-out line and excluded people with deportation orders, and provided no pathway to citizenship (and would likely not pardon other inadmissibilities if it was ever written knowing what a half asser Rubio is), his shouting and pouting that his little ploys didn't end up with a VP nomination.

If you believe in Rubio's good intentions then I have some very bad news for you, that man just wants his ass on the presidential seat.