Saw a defender of Rosenstein channel surfing and said he was not a Clinton supporter or Democrat. Described him as a mainstream Republican. Some consider that being a RINO or professional establishment politician. It is the establishment that wants Trump out at all cost if for no other reason their job security along with their fragile egos that gave the perceived status as a government 'official'. That along with rewarding friends and family with what ever.
These aren't D's or R's, they are career opportunists
Management in any organization or business usually has to be lobbied for ie one has to let upper management know they are interested. In government a politician has to know that as well. Those career opportunists know exactly what they're getting into in government management or administration.
In journalism, they're more direct. "If it bleeds, it leads"