BostonAsphalt... with all due respect... I am fearful that someone might read your post and assume that they are good to go bringing a firearm on an Amtrak train.
Sure... maybe the charges get tossed... after an arrest by Amtrak security, lots of legal fees and a damaged reputation. Or worse... maybe they don't get tossed.
I'm not a lawyer, nor did I stay at a Holiday Inn Express last night, and I suspect you're in the same boat. I've been around the block long enough to know that the law often does not work as I expect.
Let's be careful when postulating about legal situations. I don't imagine you'd want someone to end up in a miserable situation because they took your thoughts as gospel.
And thanks for posting, 'cause I know you meant well.
Best,
Rich