CFR > Title 22 - Foreign Relations > CHAPTER I—DEPARTMENT OF STATE > SUBCHAPTER E—VISAS (parts 40 to 47) > PART 40—REGULATIONS PERTAINING TO BOTH NONIMMIGRANTS AND IMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED > SUBPART F—Labor Certification and Qualification for Certain Immigrants (§40.51 to §40.54-40.59) > 40.52—Unqualified physicians.