Which federal government position is not appointed by the president?

the supreme court, this was shown when president FDR attempted to expand the supreme court to protect his well crafted system made for dealing with the great depression

yes

explanation:

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.