Originally Posted by
PVDtoDEL
Its not illegal federally, but individual states, cities, and airports can create their own rules.
Can a rule supersede a law?
Making a rule does not necessarily make it legal to enforce.
And you say "Its not illegal federally", so can a lower government entity or even a private business make some rules that contradict federal law?
Also to note: No laws may contradict any of the Constitution's principles.