'Irregardless' Is a Lexical Bastard. (Yeah, I Said It.)
Remington would be a disaster. The optics are insurmountable. A sitting president shooting down a plane full of Americans is the end of his career, irrespective of whether he did so under orders, that's why military men face an uphill struggle in modern presidential politics. At any rate, part of the point of mentioning Fitz was that he appointed Jake and later re-instated Rowan as command, so his involvement, as they told Rosen, was proof he knew of B613. He would have been impeached for sure.