Indeed, Congresswoman Waters is very arrogant...
She is very arrogant because she knows that she could get away with making outrageous comments...
Congresswoman Waters has a very safe district in Los Angeles County...She is not going to be voted out of office any time soon...
She will accuse people, who criticize her, of being racist...
The judge might have considered a contempt charge against her. It would hold zero legal weight (seperation of powers) but maybe it would embarass the gopes in congress to do something.