"The illegal entry of non-nationals into the United States is a misdemeanor according to the Immigration and Nationality Act, which prohibits non-nationals from entering or attempting to enter the United States at any time or place which has not been designated by an immigration officer, and also prohibits non-nationals from eluding inspection by immigration officers"

Even though it's nice to know the specifics, really, it's absurd.

A nation will not exist unless in the 21st century unless it manages its borders reasonably.