“This is like an officer in Idaho pulling someone over driving a car from New Mexico. In Idaho, two license plates are required, by law, one on the front of the vehicle, one on the back. “
It is NOT against the law in Idaho to drive without a front license plate.
It is for Idaho residents driving Idaho-titled/registered vehicles. http://www.legislature.idaho.gov/idstat/Title49/T49CH4SECT49-456.htm
Paragraph 1 states "plates" not plate.