That’s not the way I recall it. Anyway, everyone else agreed to it, Trump did not. So he’s not part of the pledge and it is whining to complain that Nikki Haley won’t now pledge to support him after months of his insults and name calling.
“Anyway, everyone else agreed to it, Trump did not.”
Care to point out who among them did or would have any pressure put on them to live up to it beside Trump?