"charge a straight up fee, 500k upon approval." There is already a work visa for that called EB5 even though the requirement is $1M (800K for rural areas) and

"charge a straight up fee, 500k upon approval." There is already a work visa for that called EB5 even though the requirement is $1M (800K for rural areas) and you will need to hire 10 American workers. Plenty of rich people from other countries are using that already.