yes because trade barriers must protect national defense.
Barriers of the Sea
Computer Fraud & Abuse Act
Host defenses that protect against infection include natural barriers. Such barriers are skin, or mucous as an example.
National defense is the job of the federal government.
National Defense - Poland - was created in 1936.
In Defense of the National Interest was created in 1951.
The Myth of National Defense was created in 2003.
Council of National Defense was created in 1916.
Council of National Defense ended in 1921.
National Defense University was created in 1976.
National Defense Strategy
National Defense Strategy