Can an inmate with an immigration hold on him get married?

Yes, it is possible, but it is not simple and it does not automatically change anything about the immigration case.

An inmate with an immigration detainer can legally get married while in detention. The process requires approval from the facility administrator, and in ICE custody cases, the ICE Field Office Director may also need to sign off. Each facility handles the logistics differently, so the first step is submitting a formal request to administration and finding out exactly what is required at that specific location.

A few things to understand clearly before pursuing this:

Marriage to a US citizen or permanent resident does create a potential pathway to immigration relief, but it is not a guarantee and it is not immediate. Immigration courts and ICE operate on their own timelines, and a marriage certificate alone will not stop a deportation order that is already in motion. Any relief based on the marriage would need to be pursued separately through the appropriate immigration channels, ideally with the help of an immigration attorney.

If there is an active removal order or a final order of deportation, the window to act is narrow. An immigration attorney is not optional in this situation. The intersection of criminal detention, immigration holds, and marriage-based relief is complicated enough that trying to navigate it without legal help is a serious risk.

The marriage itself may be meaningful for personal and family reasons regardless of the legal outcome. But anyone pursuing this with the hope of stopping deportation needs to go in with realistic expectations and qualified legal counsel.