We are fortunate that Christie is not very smart. He is alienating Trump supporters / voters. A smarter tactic would have been to ignore Trump and attempt to steal his voters. But Christie is not smart enough to try and pull off that stunt.
The GOPe and their corporate benefactors are paying Christie to be visible and to attack Trump.
In so doing, they completely bypassed their former favorite, Romney who is definitely a more Presidential-looking attacker.
Maybe the GOPe figured out that Romney is a has-been. Trump tore him to shreds and even the Mormons in Salt Lake are tired of Mitt’s disloyalty and his caving to the Rats.
Maybe hoisting Humpty-Dumpty onto the Wall is a sign the RINOs are really desperate. What do you think?