Trump and Oprah, as I recall, were somewhat close early on. Both in TV, ran in the same circles. Oprah got Dr. Oz his start. Its not a far stretch to say that Trump and Oz might be friendly.
I doubt Trump would endorse someone swampy, but I don't know. Take it at face value, Oz might owe Trump some key votes if he got in. But lets see how it plays out.
Oz is calling for gun control. That's all I need to know.
Didn't Madison Cawthorn call for red flag laws too?