Pearl Harbor was attacked on December 7, 1941 that set off a chain of events for the U.S. involvement into World War II. Also, it heightened the racial tensions with Japanese Americans in the US.
After the bombing, President Franklin Roosevelt signed an executive order that forced Japanese to be relocated to internment camps.
The camps were made so that America could prevent the Japanese Americans from attacking. These people could only bring what they could carry in their hands and anyone who was at least 1/16th Japanese had to go to the camps.
The Japanese Americans were put in various camps around the country. They were put to work farming and doing other jobs.