Questions about example sentences with, and the definition and usage of "Xenophobic"

A: 1- Following World War I, Americans grew extremely xenophobic, fearing that communists and anarchists were hiding behind every corner of the country.
2- The increase in unprovoked violence against Asian Americans in the U.S. speaks volumes about how xenophobic and racist, some Americans still are.

A: The president is xenophobic. He wants to build a wall along the southern border.