Can a inmate in the federal jail can they still get married, and how would that work if they can?

Yes, we have seen inmates in federal prison be granted a wedding. Under the right circumstances this can be done. There are some strict guidelines, you should have your inmate talk to his Unit Team Manager and find out what the requirements are. Obviously the inmate would have to have an impeccible record and the length of sentence has bearing on their willingness to allow this privilege.