“Bad move. Roofio is a creepy, lying weasel and puppet of the party establishment.”
No, good move.
It projects the image of Trump as someone willing to reach across to an adversary. If Rubio snubs him, it won’t make Trump look bad - it’ll make Rubio look bad. If Rubio joins him, Trump wins his delegates and it looks like the stable of candidates is moving together to join with Trump. Win, win.
Roofio already looks bad.