This just in from Texas Law Shield. Licenses from Colorado, Florida, Georgia, PA, and Texas are no longer valid in Maine. New constitutional carry in Maine, though, means you can still carry there, except:
Acadia National Park (I wasn't aware states had jurisdiction over Natl Parks!)
Maine state parks
Also, while you can carry concealed elsewhere (except courthouses, fed buildings, bars, etc.), you are technically carrying without a permit, which is now allowed in Maine. You must notify law enforcement during a stop, detention, or arrest, that you are carrying a concealed handgun.
And once again, a government agency alters the restrictions applied to our constitutional rights.
Acadia National Park (I wasn't aware states had jurisdiction over Natl Parks!)
Maine state parks
Also, while you can carry concealed elsewhere (except courthouses, fed buildings, bars, etc.), you are technically carrying without a permit, which is now allowed in Maine. You must notify law enforcement during a stop, detention, or arrest, that you are carrying a concealed handgun.
And once again, a government agency alters the restrictions applied to our constitutional rights.