"Judicial consensus, expressed in varying degrees of emphasis, is that
“the Constitution prohibits selective enforcement of the law based on
considerations such as race.”21 Although use of race and ethnicity for
such purposes has been severely limited, such use has never been
precluded:

All legal restrictions which curtail the civil rights of a single racial
group are immediately suspect. That is not to say that all such
restrictions are unconstitutional. It is to say that courts must subject
them to the most rigid scrutiny. Pressing public necessity may
sometimes justify the existence of such restrictions; racial antagonism
never can.

Reliance on “racial or ethnic criteria must necessarily receive a most
searching examination to make sure that it does not conflict with
constitutional guarantees.” The qualified language of these decisions
demonstrates judicial recognition of circumstances where profiling race
may have “probative value” and, having passed “a most searching
examination,” be utilized by law enforcement and security personnel.

Montero-Camargo, 208 F.3d at 1134, (quoting Wygant v. Jackson Bd. of Ed., 476 U.S. 267, 273, 106 S.Ct. 1842, 90 L.Ed.2d 260 (1986))).

Montero-Camargo, 208 F.3d at 1134.

Los campos de concentración en los Estados Unidos alojaron a unas 120.000 personas, en su mayor parte de etnia japonesa, más de la mitad de las cuales eran ciudadanos estadounidenses, en establecimientos diseñados a ese efecto en el interior del país, durante 1942 y 1948.

...

El 31 de marzo de 1942 la Zona 1 se declaró fuera de límites para cualquier persona de ascendencia japonesa. De inmediato se ordenó que aquellos japoneses o descendientes de japoneses residentes que se preparasen para partir, sin especificarse su destino final y limitándose su equipaje a un bolso de mano. Aunque 7 de cada 10 étnicos japoneses afectados por la medida habían nacido en los Estados Unidos, la órden no hacía distinción sobre nativos o extranjeros.

Special Registration Program
In June 2002, Attorney General John
Ashcroft announced the implementation of
NSEERS, the National Security Entry Exit
Registration System, which established a
series of regulations and registration requirements.
One of the most ambitious aspects of
this program is Special Registration. In a
massive operation reminiscent of the Nazis’
requirements for Jews living in Germany and
countries under German occupation, all male
nationals over the age of 15 from 25 countries
were ordered to report to the government
to register and be fingerprinted, photographed
and questioned. With the exception
of North Korea, all targeted countries
are Arab and Muslim. Despite the fact that
the government gave no individualized
notice for this poorly publicized requirement,
all those who failed to register were
made vulnerable to deportation and criminal
penalties. The ACLU denounced the plan as
a thinly veiled effort to trigger massive and
discriminatory deportations of certain immigrants.

ICE Special Registration

Special Registration

For citizens or nationals of Afghanistan, Algeria, Bahrain, Eritrea, Iran, Iraq, Lebanon, Libya, Morocco, North Korea, Oman, Pakistan, Qatar, Saudi Arabia, Somalia, Tunisia, United Arab Emirates, Sudan, Syria, or Yemen

Group I.b. .... 2.Is a national or citizen (applicable to dual citizens as well) of Iran, Iraq, Libya, Sudan, or Syria;

Group I.c. ... 2.Is a national or citizen (applicable to dual citizens as well) of Afghanistan, Algeria, Bahrain, Eritrea, Lebanon, Morocco, North Korea, Oman, Qatar, Somalia, Tunisia, United Arab Emirates, or Yemen;

Group I.d. ... 2.Is a national or citizen (applicable to dual citizens as well) of Saudi Arabia and Pakistan;

What are the special registration requirements?
Individuals subject to special registration requirements must:

* Register with INS, which includes INS taking the individual's fingerprints and photograph;
* Be interviewed by INS within 30 . 40 days of entering the United States;
* Be interviewed again by INS one year after entering the United States;
* Continue to be interviewed by INS on the annul anniversary date of their last admission to the United States
* Inform INS within 10 days of any change of address, change of employer or change of school, using Form AR-11SR.
* Depart the United States from an officially-designated port of departure only and report to an INS officer at such airport prior to departure.