I believe that the analysis underlying the leveraged right to asylum is conceptually flawed. As I will show, there is no duty of non-refoulement that binds all states as a matter of customary international law and it is not the case that all persons entitled to claim protection against refoulement of some kind are ipso facto entitled to refugee rights. These claims are unsound precisely because the critical bedrock of a real international legal obligation-namely, the consent of states evinced by either formal commitments or legally relevant actions -does not yet exist.
Hathaway, James C. "Leveraging Asylum." Tex. Int'l L. J. 45, no. 3 (2010): 503-36.