As I understand it, the charge is conspiracy:
The case, which will be heard in New Jersey,
is the first time that federal prosecutors in one
district have charged a licensed gun dealer from
another state in a gun-running conspiracy.
The question is whether the party to the conspiracy who performed his part of it in State A may be charged/tried in State B, where the act that he and his co-conspirators conspired to commit was committed.
I did a quick google for
conspiracy jurisdiction "act in furtherance".
Just looking at the results list without going any further, I see:
"Arizona has jurisdiction over a conspiracy when an act in furtherance of that conspiracy occurred within this state ..."
"... of this state conspires with another outside of this state and an overt act in furtherance of the ..." (Vermont)
"... An agreement made in another jurisdiction to engage in or ... is punishable herein only when an overt act in furtherance of such conspiracy is committed ..."
"... state conspires with another outside of this state and an overt act in furtherance of the conspiracy is committed ..." (Minnesota)
(The search results are
here)
The charge doesn't seem to be any different from what we might see if "X" in New York and "Y" in Nevada conspired to defraud a Las Vegas casino, and "Y" pulled it off. I think that this sort of jurisdiction over co-conspirators in another jurisdiction is very often assumed.
The Canadian Criminal Code says about the same (criminal law is under federal jurisdiction in Canada, so the reference is solely to foreign jurisdictions):
http://www.canlii.org/ca/sta/c-46/sec465.html(4) Every one who, while in a place outside Canada, conspires with any one to do anything referred to in subsection (1) in Canada shall be deemed to have conspired in Canada to do that thing.
(5) Where a person is alleged to have conspired to do anything that is an offence by virtue of subsection (3) or (4), proceedings in respect of that offence may, whether or not that person is in Canada, be commenced in any territorial division in Canada, and the accused may be tried and punished in respect of that offence in the same manner as if the offence had been committed in that territorial division.
Unless you're gunning for the entire law of conspiracy, I think this argument is doomed. Now, you could do that -- challenge conspiracy laws under that provision of the US constitution. I'd bet it's been done at some time, though.
I googled again for
conspiracy jurisdiction "impartial jury of the state" (lifting a phrase to see whether that provision of the US constitution had been argued against conspiracy laws) -- search results
here. I have to get back to work, but somebody might have a browse there and see what may have been said on the point.
.
edit: ah, I see, it's a federal charge. (These things confuse me; all criminal charges are federal here.) So it isn't a matter of the state where the overt act was committed taking jurisdiction over the out-of-state act of conspiracy.
The conspiracy itself is presumably an offence, so the prosecution could presumably be in the state in which "X" participated in it, and not in which "Y" committed the overt act (unlawfully supplying guns, I assume).
Any US criminal lawyers around? (Canadian criminal law actually never was my specialty anyhow.) I'd think there might be a principle that trials of co-conspirators should take place together, even for their own protection -- if they weren't severed, then none of them could be compelled to testify against the others, for instance.
Fascinating legal tidbits ...
.