An Independent Public RecordWednesday, June 17, 2026

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John Mason Long

Campaign manager for Nancy Mace's 2024 congressional re-election campaign (February, May 2024). In a sworn affidavit executed July 11, 2025 and later filed as a court exhibit, Long recounted statements and conduct Mace described to him during his employment. The allegations are unproven and contested; Mace denies wrongdoing.

John Mason Long

John Mason Long served as campaign manager for Nancy Mace's 2024 congressional re-election campaign in South Carolina's 1st Congressional District. By his own sworn account he held the role from February 13, 2024 through May 2024. He is publicly identified in Mace campaign press releases and statements issued during the 2024 primary cycle, including in connection with Trump's March 2024 endorsement of Mace and the campaign's call for rival Catherine Templeton to exit the race.

The sworn affidavit

On July 11, 2025, Long executed a sworn affidavit in Charleston County, South Carolina, which he states he submitted pursuant to a subpoena issued on May 30, 2025. The affidavit was attached as Exhibit E to the Plaintiff's Memorandum in Opposition to the United States' Motion to Substitute filed by Brian Musgrave in his federal defamation action against Mace (the United States having moved to substitute itself as defendant under the Westfall Act/Federal Tort Claims Act). The same affidavit was later submitted as Exhibit D to Bryant's Response and Opposition to the Motion for a Confidentiality Order in Berg v. Bryant, Charleston County Court of Common Pleas Case No. 2025-CP-10-03124, electronically filed December 22, 2025.

The version reproduced below is that Exhibit D as it appears in the public court file, bearing the court's electronic-filing stamp. Because it was filed after the court's November 17, 2025 order ending pseudonym use in the case, it identifies the parties by their true names. The filed PDF is available here.

Page 1 of the sworn affidavit of John Mason Long, executed July 11, 2025 in Charleston County, South Carolina, as filed (Exhibit D, e-filed December 22, 2025) bearing the court's electronic-filing stamp Page 1, Long identifies himself as Mace's campaign manager (Feb. 13, May 2024) and describes an April 6, 2024 phone call Mace placed while he was driving her. The "Electronically Filed" stamp runs down the right margin.

Page 2 of the sworn affidavit of John Mason Long, paragraphs 13-22, including statements about phone data, an Apple AirTag, and property disputes Page 2, paragraphs 13-22, including Long's account of what Mace told him about accessing Patrick Bryant's phone data, an Apple AirTag, and "potential strategies … to gain leverage in property disputes."

Page 3 of the sworn affidavit of John Mason Long, the witness list and the perjury affirmation over his signature Page 3, a list of individuals Long says have potentially relevant information, and his affirmation "under penalty of perjury," over his signature.

What the affidavit says

Throughout the affidavit, Long repeatedly states he did not independently verify the matters Mace described to him. As to Mace's handling of Bryant's devices, he swore:

"Mace told me she had accessed data from Patrick Bryant's phone and copied files onto her own devices. She also stated that she had placed an Apple AirTag device on Bryant's vehicle, which he later discovered and confronted her about. I did not participate in or independently confirm these activities." (¶ 17)

"Mace discussed with me potential strategies involving the use of data or materials from Patrick Bryant to gain leverage in property disputes. I discouraged these discussions, and to my knowledge, no such actions were taken." (¶ 18)

Long added that he "refused any requests by Mace … to engage in potentially unlawful activities regarding property access" (¶ 19). As to statements Mace made about Bryant, Long swore that Mace "made … claims that he had placed hidden cameras in properties and recorded others without their consent, and that he had physically grabbed her" (¶ 15), but that "I have not independently verified these claims, nor have I seen any hidden cameras, recordings, police reports, or medical records regarding these matters beyond the photographs shown to me by Mace" (¶ 16).

On the April 6, 2024 phone call, placed, Long says, while he was driving Mace during a campaign event, Long states Mace called the individual who later sued under the pseudonym "Jane Doe," identified herself, and said she was "looking into … a 'serious matter.'" Long swore that Mace "stated that she believed [the individual] had been assaulted while unconscious," that "Mace's description of the incident changed during the call," and that "I observed that Mace presented these allegations as information she had gathered from others or seen in some form, but I did not see any such video evidence or independently verify the truth of these allegations" (¶¶ 6-9).

The affidavit also states that Mace "disclosed to me that she drafted legislation related to digital privacy offenses, which she stated was partly inspired by her personal experiences" (¶ 20), and describes "personal use of campaign funds for meals and related expenses" that Long says he "declined to authorize" (¶ 22). Long says his written success bonus "remains unpaid" (¶ 24). The affidavit closes with a list of other individuals Long identifies as having potentially relevant information.

Litigation context

The House Ethics Committee publicly announced on March 2, 2026 that it is investigating Rep. Mace for alleged improper housing reimbursement practices; Long is not named in the committee's public statement.

The statements above are John Mason Long's sworn account, attributed to him; they are allegations, not findings of fact, and they have not been adjudicated. The matters are the subject of ongoing civil litigation, including Berg v. Bryant (Charleston County Court of Common Pleas No. 2025-CP-10-03124), the related federal proceedings, and Brian Musgrave's federal defamation action, and a separate South Carolina State Law Enforcement Division (SLED) investigation. Mace denies Bryant's claims and denies wrongdoing; Bryant and the other named parties deny Mace's allegations. Nothing here is a finding of fact. The affidavit reproduced above is the version filed in the public court record (Exhibit D, e-filed December 22, 2025); because it was filed after the court's November 17, 2025 order ending pseudonym use in the case, it identifies the parties by their true names.

Sources

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