Nigeria, Aug. 6 -- United States (US) President Donald Trump's policy of deporting foreign nationals convicted of violent crimes has sparked a global uproar. It also highlights the stark power imbalance between the US and developing countries, and raises serious concerns about security risks, human rights abuses and the denigration of international humanitarian law.

The controversy started in March when the US paid El Salvador $5 million to incarcerate over 250 Venezuelan deportees accused of gang affiliations, in a maximum-security prison notorious for human rights abuses. Though the deal's terms remain unknown, the rewards appear to include a White House visit and endorsement of President Nayib Bukele, despite alarm over his repression...