; or (D) authorize or permit the denial to any person of the due process of law required by the Constitution. (3) Court for actions that are challengeable Any action not precluded under this subsection that challenges an employment consent judgment or order described in paragraph (1) shall be brought in the court, and if possible before the judge, that entered such judgment or order. Nothing in this subsection shall preclude a transfer of such action pursuant to section 1404 of title 28, United States Code. (n) Discrimination for making charges, testifying, assisting, or participating in enforcement proceedings It shall be an unlawful employment practice for an employer to discriminate against any of the employer's employees or applicants for employment, for an employment agency, or joint labor-management committee controlling apprenticeship or other training or retraining, including on-the-job training programs, to discriminate against any individual, or for a labor organization to discriminate against any member thereof or applicant for membership, because the employee, applicant, individuals, or member involved has opposed any practice made an unlawful employment practice by this section, or has made a charge, testified, assisted, or participated in any manner in an investigation, proceeding, or hearing under this section. (o) Printing or publication of notices or advertisements It shall be an unlawful employment practice for an employer, labor organization, employment agency, or joint labor-management committee controlling apprenticeship or other training or retraining, including on-the-job training programs, to print or publish or cause to be printed or published any notice or advertisement relating to employment by such an employer or membership in or any classification or referral for employment by such a labor organization, or relating to any classification or referral for employment by such an employment agency, or relating to admission to, or employment in, any program established to provide