On occasion, a law is so stupid that no rational person would suspect it's existence. At other times, the enforcement of a law is so misguided that it takes us by surprise. This is illustrated by the "rifle leaned against the car" scenarios.
There are many circumstances when the proper answer to a query from a LEO is, "None of your business".
I have not been questioned by a Conservation Officer (game warden) for many years. When I am, I am just as civil as his behaviour warrants.
I have lived on both sides of the border and both sides of the continent. I have travelled across the US numerous times over the last 45 years. There are laws and restrictions in different areas which a person from western Canada would never expect. There are also laws and restrictions here that no resident would expect if he didn't do some research. GD