“after 4 years, Trump only build 54 miles of wall, and where was Mexico paying for that”
And all of that wall was where there was already pre-existing fence, so Trump didn’t actually add an inch. He replaced some fence with steel slats which don’t functionally seem much better. All just smoke and mirrors that unfortunately a big chunk of his base continues to fall for.
In any case, if Christie’s only qualification is pointing out Trumps failures, there should be plenty of other candidates similarly qualified and without any past scandals.