Re: Fishing license and ID check?
Being the information junkie that I am, I just did a little surfing on the matter of being requested to show ID by a law enforcement officer. It seems that in any state that has a "stop and identify" statute, an officer who has "reasonable suspicion" can demand to see an ID. Reasonable suspicion is not the same thing as "probable cause" and requires a much lower standard, as to belief that a crime has occurred or is about to occur.
As of 2008, there are 24 states (Mass is not one of them) with stop and identify laws. So, in the affected states, an officer who has a reasonable suspicion that something illegal might be going on, can demand an to see an ID. This issue was upheld by the US Supreme Court in a case called Hiibel v. Nevada. The case is mildly complicated and gets into issues of 4th and 5th Amendement rights, but suffice it to say that the Nevada statute on the matter was affirmed.
The thing that comes to my mind immediately, is that marine patrols can ask to see a fishing license under state laws applicable to that issue. Since a fishing license is a form of an ID, it stands to reason that a demand to see it is enforceable both under the fishing related statutes, and in states with stop & identify laws, a general demand to see an ID. Should the person being questioned then offer false ID - either the fishing license or a state ID/License - you go from an allowed check of fishermen, to a reasonable suspicion situation, to an actual violation and probable cause to investigate other things, in a hurry.
I guess my point here is that trying fake out the wildlife guys is probably not a good idea, because they have a lot of law in their favor, should they decide to make your life miserable.
Once again, you can risk all sorts of trouble, or you can spend the 30 bucks (only $15 in my state for fresh & salt water) it takes to get a license, show it to the officer and then go home with your cooler full of fish for supper. In my book, this choice is worth about a millisecond of thinking to come to the right conclusion.