"Korematsu v. United States, 323 U.S. 214 (1944), was a landmark
United States Supreme Court case concerning the constitutionality of
Executive Order 9066, which ordered Japanese Americans into
internment camps during World War II regardless of citizenship.
In a 6–3 decision, the Court sided with the government, ruling that the
exclusion order was constitutional."
"The Korematsu decision has not been explicitly overturned, although, in
2011, the Department of Justice filed an official notice conceding that
the then Solicitor General's defense of the internment policy had been in error. ...
Feldman summarized the present view of the case as: "Korematsu's
uniquely bad legal status means it's not precedent even though it hasn't
been overturned." "
"Following the 2016 election in which Donald Trump became President-elect,
the Korematsu decision was raised as offering possible support for
implementing his policies targeting all Muslims in the United States.
The discussion arose in the context of comments from Carl Higbie and
proposals from Kansas Secretary of State Kris Kobach, an advisor to
Trump on immigration matters."