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2. The GEO Group

Cracking down on illegal immigration has been the main pillar of Trump's campaign platform. And while most agree that such a maneuver would come at an enormous cost to the U.S. economy, some companies would make bank on its execution.

"The only businesses that would benefit would be those with government contracts to enforcing these new rules -- private prisons, security and defense firms," said Alex Nowrasteh, immigration policy analyst at the Cato Institute, a libertarian think tank based in Washington, D.C.

Cue The GEO Group (GEO) .

The private prison real estate investment trust has a long-standing relationship with the federal government and U.S. Immigration and Customs Enforcement (ICE), dating back to the opening of the ICE Processing Center in Aurora, Colorado in the mid-1980s. It is the largest provider of correctional, detention and community reentry services to the federal government.

The federal government accounted for 45.5% of GEO's revenue in 2015, and ICE specifically accounted for 17.7%. With Trump in the Oval Office, those numbers would only increase.

The crux of the billionaire's immigration plan is the deportation of 11 million undocumented immigrants, but before anyone hits the road, individuals would need to go through a judicial process that entails some time in jail. In 2013, the Department of Homeland Security reported that undocumented immigrants were detained by ICE for an average of 33.5 days at a cost of $118.88 per day per bed, beds such as those provided by GEO.

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