Many people opposed FDR's court packing plan. Many people saw his move as a threat to the principle of separation of powers. People also accused the president of packing the court with people who supported his view. This completely made people not like this even more then they had before, although some people still did approve of FDR's packing plan. Eventually Roosevelt withdrew his plan after fighting for it for a long time, but he gave up.
Feelings of nationalism declined because the war destroyed farmlands across the country. American military leaders became unpopular for leading the country into a costly war
Some examples of Post-Impressionist characteristics are bright colors, art made purposely for the artist's sake, and expressiveness. I hope this helps.