; (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, a Presidential appointee described in section 303 or a State employee described in section 304 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 Presidential appointee described in section 303 or State employee described in section 304 that would otherwise be held confidential in accordance with a covered provision of a nondisclosure agreement shall not be made public, unless that complainant appointee or 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 appointee or employee. . 4. Nondisclosure agreement unenforceable under the Congressional Accountability Act of 1995 Title II of the Congressional Accountability Act of 1995 ( 2 U.S.C. 1311 et seq.) is amended by adding at the end the following: 208. Nondisclosure agreement unenforceable (a) In General Any covered provision of a nondisclosure agreement that is entered into by a covered employee and an employing office shall be unenforceable against that complainant covered 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