This was true only ~15 years ago. My how things have changed. The Tea Party replaced the old progressives, where like GW Bush even provided government funding to feed the homeless, teach kids, etc. Then even before that finished happening the Alt Right took over from the inside. Now I don't even know what to call the latest movement, although it seems to no longer matter if it is already over and the Alt Right is back in power with Trump at the helm again.
I have heard that the person most single-handedly responsible for the rift before all that was Newt Gingrich, who proposed the hard-line stance of obstructionism, where after that cooperation was seen as weak while before that it was a strength.
How long until we reach recursion-ception? :-P