CFR > Title 22 - Foreign Relations > CHAPTER I—DEPARTMENT OF STATE > SUBCHAPTER E—VISAS (parts 40 to 47) > PART 42—VISAS: DOCUMENTATION OF IMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED > SUBPART I—Refusal, Revocation, and Termination of Registration (§42.81 to §42.83)