In the case of korematsu versus united states the supreme court ruled that government did not violate the constitution by ordering the fourth relocation of japanese americans to internment camps according to the court this is because the order

This is  because   the  order  required  provision  of  other  person Japanese  ancestry to  report  to  assembly  center  and  also provided  detention  to  such  person  assembly. The  court wanted  to  held the  need  to  protect against  espionage  which out weighted Fred  Korematsus  individual  rights  and  even  the  right  of  Americans Japanese  descent.