I'm liking what Trump is doing to/in this campaign, but that episode a few years back was akin to many of the "teasers" we've gotten from Whore-aldo, Hannity, Monica Crowley, and yes, even Breitbart. It may become his Achilles' Heel.
His opponents for the nomination can't bring it up for fear of alienating the base.
I admit that I am not a Trump fan. But then again I've never liked reality TV shows.