The USA is in a state of emergency, and has been since the terrorist attacks of 9/11/2001. The state of emergency was declared by former President G. W. Bush:
Proclamation 7463—Declaration of National Emergency by Reason of Certain Terrorist Attacks
A national emergency exists by reason of the terrorist attacks at the
World Trade Center, New York, New York, and the Pentagon, and the
continuing and immediate threat of further attacks on the United
Now, Therefore, I, George W. Bush, President of the United States of
America, by virtue of the authority vested in me as President by the
Constitution and the laws of the United States, I hereby declare that
the national emergency has existed since September 11, 2001, and,
pursuant to the National Emergencies Act (50 U.S.C. 1601 et seq.), I
intend to utilize the following statutes: sections 123, 123a, 527,
2201(c), 12006, and 12302 of title 10, United States Code, and
sections 331, 359, and 367 of title 14, United States Code.
Since then it has been extended every year, the last time by President Obama.