“refused to provide Luc with travel documents, and he was released from custody as required by federal law.”
OMG, this is a major loophole for deportation! The origin country can refuse!
True, but there are International Court remedies.
America can refuse to admit anyone with a passport or visa from the violating country.
Obama never enforced our side of law.
Trump has threatened to block entries from several countries that won't accept their criminal citizens back, like Somalia, but as far as I know, no one from those violating countries has ever been blocked from entering the USA.
Perhaps Air America could arrange transport. With or without a chute!