That sounds very open-ended. Material witness holds are indefinite. He does not have to "know" the defendants in the case, if he saw something, they are keeping him for testimony as to what he saw, where he saw it and when. The troubling aspect of your question is the immigration issue which sounds like he might be deported upon release.

All inmates are allowed to receive mail. More importantly inmates are allowed to write you. Mail is considered sacred in a prison, detention center or jail. There is even a program for indigent inmates at every facility where they supply paper, pencil, envelopes and stamps. Whether the inmate has money on their books or not, there is no reason why an inmate cannot keep in touch if they want.

you should call the facility chaplain to see what the policy is for marriage.

Our service gets the local line for the facility where your inmate is incarcerated and forwards the call to your current number. Nothing will change on your end. You give your inmate the local number, he places it on the Trulincs system and calls directly to that line - it will ring on the phone number you provide us, completely seamless.

There is NO jail, or prison, or detention center that has "co-ed" housing. Female inmates are segregated from male inmates, always. Inmates are allowed out of their cells for most of the day in the general population of the pod they are housed in (unless there is a group punishment). Inmates are in their cells for "count time" and sleep.

If it was sent through an approved online vendor, the exchange of funds to the inmate is instantaneous.

He might have had a stop at the infirmary on his way to the SHU. If he had cash on him he will likely lose some privileges for a while maybe even get shipped to a prison further from home.

It's not a law, it's a privilege that is offered to inmates with more than a year on their sentence with approval from the warden.

If you have not been sentenced yet, you need to discuss guidelines and points with your attorney. There is a basic graph to the lines a judge follows unless you have some aggravation points. Jared from Subway was famous and that fame cost him at least 5 extra years. Federal time is easier to do than state time - our guess is it might be ten years. Most inmates do not talk about their charges, it's almost forbidden. But,

Probably, but you need to consider why there was a protective order in the first place. This might be a good time to take inventory of your life and NOT go back to the person you needed protection from. Before you visit, ask the counselor or case manager if there are any lingering restrictions for visitation so that you do not make the trip for nothing.