Also called Concentration or Re-Education Camps have existed since WWII. There are over 800 Federal Emergency Management Agency (FEMA) camps in all 50 states. All total there are more than 1000 camps available. They are all staffed secured and ready to go when needed by the federal government. Some are decommissioned military bases switched over under the REX 84 program, some are closed Walmart's, some were constructed for legitimate temporary FEMA housing, and some can be quickly converted schools and stadiums.
One faculty located outside Anchorage Alaska is ready for as much as 2 million occupants. Alaska has a total population of just under 750,000. Alaska alone or Region 10 as defined by FEMA has the ability to detain more than 3 times its population.
Most of these camps have major roadways leading both in and out with airports either nearby or land that can be easily converted. Many include railroad facilities capable of transporting huge numbers of future detainees like the Nazi camps. The average size camp can house more than 20,000 prisoners.
Executive Orders 10990, 10995, 10997, 10998, 10999, 11000, 11001, 11002, 11003, 11004, 11005, 11049, 11051, 11310, and 11921, would suspend both the US Constitution as well as The Bill of Rights and allow FEMA to take over all modes of transportation both public and private. All electrical power, gas, and petroleum fuels, and minerals. They would take over of all food and sources of food (farms, etc). All health, education, and welfare. All airports and airplanes both private and commercial. All communications and media. All railways and waterways. EO 11002 designates the Postmaster General authority to operate a National Registration of all citizens, ie The Draft. There is even an EO allowing camps to be used for Re-Education.