A removal order under Title V of the Act shall not be executed in circumstances that would violate Article 3 of the United Nations Convention Against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment, subject to any reservations, understandings, declarations, and provisos contained in the United States Senate resolution of ratification of the Convention, as implemented by section 2242 of the Foreign Affairs Reform and Restructuring Act of 1998, Pub. L. 105-277. Convention-based claims by aliens subject to removal under this Title shall be determined by the Attorney General, in consultation with the Secretary of State.