He is a true American hero.
He fought ferociously for our side from deep in the belly of the university beasts.
I often state on this forum we need to welcome Leftists who have been mugged into the Conservative movement if they have indeed undergone an internal conversion.
He had a painful one that took him years, but he changed. Ronald Reagan was another, though he was no radical the way Horowitz was.
I think we should welcome Tulsi Gabbard into our movement. I believe she has had a conversion. And I used to be one of her biggest critics on this forum.