Our entire #political environment can be traced to one moment. November 4, 1995. Pres. Clinton is flying to Isreal for the funeral of Yitzhak Rabin, and Bob Dole & Newt Gingrich hitched a ride on Air Force One. They were sent into the back of the plane for the 25 hour flight, and never invited forward.
Gingrich saw this as a snub and from that moment on fought everything Clinton did to the point of irrationality.
Dole didn't feel snubbed (military vet; he'd flown worse), but he backed Newt up.