Amid rural Louisiana’s crawfish farms, towering pine trees and cafes serving po’boys, nearly 7,000 people are waiting at immigration detention centers to learn whether they will be expelled from the United States.

If President Donald Trump’s administration has its way, the capacity to hold tens of thousands more migrants will soon be added around the country as the U.S. seeks an explosive expansion of what is already the world’s largest immigration detention system.

Trump’s effort to conduct mass deportations as promised in the 2024 campaign represents a potential bonanza for private prison companies and a challenge to the government agencies responsible for the orderly expulsion of immigrants. Some critics say the administration’s plans also include a deliberate attempt to isolate detainees by locking them up and holding court proceedings far from their attorneys and support systems.

The acting director of the Immigration and Customs Enforcement agency, Todd Lyons, said at a border security conference in Phoenix last week that the agency needs “to get better at treating this like a business” and suggested the nation’s deportation system could function “like Amazon, trying to get your product delivered in 24 hours.”

“So trying to figure out how to do that with human beings and trying to get them pretty much all over the globe is really something for us,” Lyons said.

This month, ICE invited companies to bid on contracts to operate detention centers at sites around the country for up to $45 billion as the agency begins to scale up from its current budget for about 41,000 beds to 100,000 beds.

The money isn’t yet there, but contracts are already being awarded. The House narrowly approved a broad spending bill that includes $175 billion for immigration enforcement, about 22 times ICE’s annual budget. The agency’s 100-plus detention centers nationwide currently hold about 46,000 people, causing overcrowding in locations including Miami.

ICE last week awarded a contract worth up to $3.85 billion to Deployed Resources LLC to operate a detention camp at the Fort Bliss Army base in Texas. The little-known company is shifting its business from Border Patrol tent encampments for people arriving in the United States — most of which are now closed — to ICE facilities for people being deported.

The Geo Group Inc. got a contract for 1,000 beds in Newark, New Jersey, valued at $1 billion over 15 years and another for 1,800 beds in Baldwin, Michigan. CoreCivic Inc., won a contract to house 2,400 people in families with young children in Dilley, Texas, for five years.

The stock market has rewarded both of these private corrections companies. Geo’s stock price has soared 94% since Trump was elected. Shares of CoreCivic have surged 62%.