; (2) that prohibits the disclosure of information relating to an allegation or series of allegations that could plausibly give rise to a valid claim of sex discrimination; and (3) relating to material that is not otherwise prohibited by law from being disclosed. (c) Defense In any action or proceeding to enforce a covered provision, an employee described in section 717(a) may raise as a defense the unenforceability of a covered provision of a nondisclosure agreement, as set forth in this section. (d) Confidentiality (1) In General Personally identifying information about a complainant employee that would otherwise be held confidential in accordance with a covered provision of a nondisclosure agreement shall not be made public, unless the complainant employee chooses to make that information public. (2) Unlawful retaliation A violation of the prohibition described in paragraph (1) may be considered evidence of unlawful retaliation against the complainant employee. . 3. Nondisclosure agreement unenforceable under the Government Employee Rights Act of 1991 Title III of the Government Employee Rights Act of 1991 (42 U.S.C. 2000e–16a et seq.) is amended by adding at the end the following: 305. Nondisclosure agreement unenforceable (a) In General Any covered provision of a nondisclosure agreement that is entered into by a Presidential appointee described in section 303 or a State employee described in section 304 and an entity employing such appointee or employee, as the case may be, shall be unenforceable against that complainant Presidential appointee or State employee. (b) Covered provision In this section, the term covered provision means a provision of a nondisclosure agreement— (1) that is entered into after the date of enactment of the Stop Silencing Victims Act ; (2) that prohibits the disclosure of information relating to an allegation or series of allegations that could plausibly give rise to a valid claim of sex discrimination