There will be fewer and fewer jobs in US for the next 20 years. It is better to start making hard decisions now. I propose to build multiple reservations that could absorb 150M Americans. The folks in the reservation will be guaranteed a low but stable level of quality of life (food, vitamins, basic healthcare). No work will be required from those in the reservation. The reservation is essentially for those who don't want to work or can't realistically find a job in the future. The immigration to and from the Great American Reservations will be voluntary. Maybe some wait time will need to be observed to prevent people moving in and out too frequently.