That’s a great idea! I’d still want to build some camps, maybe only for the fact that it would be funny to make Mexicans build them before putting them inside and shipping them off (we could leave crucial parts to more competent craftsmen).I was discussing this with somebody the other day. I got to thinking about the USN's amphibious assault ships like the Tarawa and Wasp classes. (I think @Get2choppaaa deployed on USS Wasp) From what I've read, those ships can carry around 1,700 Marines, not including the actual crew. If there are any older hulls which are decommissioned yet still afloat, I wonder if it would be possible to gut them of their military hardware and refit them as floating detention facilities, kind of like the old floating 'prison hulks' from the Age of Sail. Far more secure, with less chance of escape than some camp with just chain-link fencing and barbed wire.
Perhaps the camps could be utilized for less hazardous occupants while the ships would be for like face tattoo tier beaners. That way we could always gas them if necessary and not worry about damaging the structure of the ship if disposal of a bad batch was required.