Under the United Nations Convention against Torture, a protection that resembles asylum. Under that international provision, the U.S. agrees not to deport people who are not American citizens or nationals to another country where they could be tortured. According to human rights activists and advocates for deported veterans, drug cartels target former U.S. residents, especially veterans with combat experience, to work on their behalf, and those who don't comply are at risk.

Since the convention's entry into force, the absolute prohibition against torture and other acts of cruel, inhuman, or degrading treatment or punishment has become accepted as a principle of customary international law.[6] As of February 2017, the Convention has 161 state parties. Many of which are located in South America and the Middle East... 

Something for immigration attorney's to explore as a defense against deportation.

https://en.wikipedia.org/wiki/United_Nations_Convention_against_Torture