[JRios1968]

It seems that a member of a reserve component must be on active duty or training to be subject to court-martial. See Article 2 of the UCMJ.

Wrong. You can not claim exemption from the rules, based only on what your duty status is when you break the rules. Truth is, Paul Hackett is subject to the UCM even as a Reservist, especially if you are using your Reserve status as a tool (in this case, for political advantages.)

[AndyJackson]

You can not claim exemption from the rules, based only on what your duty status is when you break the rules.

Sorry, but you can. It's the law. Retired O-6 here.