Gandalf, Moria, and Arrest

[Moonraker]

Originally Posted by Aiwendil

Which is to say, none.

The fate of the Ring was the only thing that mattered. Aragorn could have declared that as of now he makes all the decisions and will lead the Company elsewhere, and not through Moria. He may have had no legal power to have Gandalf arrested at the gate of Moria, but that would have changed once he was sworn in as King of Gondor.