Conspirators

[Steve]

Booth moved around the country a lot and could easily avoid registering for the draft.

Surratt did in fact register for the draft, as well as Dr. Mudd. Their station in Maryland probably required them to in order to avoid suspicion.

Powell was from Alabama and in the Confederate Army. Arnold was also in the Confederate Army until 1864.

David Herold also avoided draft registration. I guess he just skulked around without anyone noticing or caring.

Atzerodt may have been exempt from the draft due to his citizenship status. Only aliens who had naturalized or were in the process of naturalizing, ie had filed their "first papers" two years prior to naturalizing were subject to the draft. I don't know what Atzerodt's citizen status was.

O'Laughlen was a Confederate veteran, I don't think the Union Army would've wanted him even if he had bothered to register for the draft.