EXCLUSIVE:The Senate investigation into former Special Counsel Jack Smith's "Arctic Frost" probe is widening, as Republican lawmakers question Verizon’s handling of subpoenas for senators’ phone records after the telecom giant failed to disclose one during an earlier congressional records search.
As part of Operation Arctic Frost — the codename for the FBI's Trump-election-interference probe with Smith placed at the helm — prosecutors subpoenaed Verizon and other phone carriers for toll records tied to members of Congress and other Republican figures. Several conservative entities were swept up in the probe, including the late Charlie Kirk.
Verizon later acknowledged omitting Smith's subpoena from its congressional record search.
The dispute centers less on Verizon's compliance with the subpoena than on what the company knew afterward, whether it should have notified Congress and why it failed to disclose the subpoena during an earlier records search.
Smith’s investigation has faced increased scrutiny in recent months, and now Senate Judiciary Chairman Charles Grassley, R-Iowa — whose records were among those obtained — and a slew of his colleagues want to know what Verizon knew, when it knew it and whether the company should have notified affected members of Congress after turning over their phone records to Smith's team.
"Jack Smith oversaw a sweeping and unprecedented investigation that swept-up records from hundreds of Republican entities, including the phone toll records and text messages from myself and dozens of my colleagues," Grassley told Fox News Digital Friday.
Toll records are essentially the metadata of a telephone call — and exclude the contents of the conversation. They often include the phone numbers involved, date, time, duration and often the operative cell-tower location.
"Congress deserves to know the full picture of how Smith carried out Arctic Frost so it never happens again."
"As part of our investigation, we need to fully understand what Verizon knew about Smith’s subpoenas, when they became aware members were impacted and why the company didn’t inform members like they were supposed to," he said.
In a Thursday letter to Verizon CEO Daniel Schulman, Grassley, Senate Investigations Subcommittee chairman Ron Johnson, R-Wis., and more than a dozen senators said they remain concerned not only by the alleged "abuse of power by federal government actors… but also with Verizon’s disclosures of (m)embers’ phone records pursuant to a May 25, 2023, subpoena (and) its failure to disclose this information to affected Members."
Of the signatories, Sens. Bill Hagerty IV and Marsha Blackburn, R-Tenn., Rick Scott, R-Fla., Tommy Tuberville, R-Ala., Mike Lee, R-Utah, Ted Cruz, R-Texas, Josh Hawley, R-Mo., John Cornyn, R-Texas, and Cindy Hyde-Smith, R-Miss., also had their phone toll records or text messages swept up by Smith.
Their inquiry noted he asked Verizon in October 2023 to identify Justice Department or other federal law enforcement requests involving Senate devices used by his staff dating back to 2016.
The senator wrote that the subpoena was not disclosed in Verizon's initial response, and Grassley said Congress did not learn of it until Verizon acknowledged in 2025 that "human error" had caused its omission.
In its original October 2023 response to Grassley, Verizon wrote that it often limits retention of legal processes received to a period of four years, and attested it had no records to produce prior to October 2019.
"This raises questions as to whether Verizon discovered legal process from DOJ for Senate devices and lines, including the May 2023 Arctic Frost subpoena, in its search from October 1, 2019, to October 27, 2023, for responsive records to Chairman Grassley’s request," Grassley wrote in his new letter.
Therefore, Grassley and 15 other senators are demanding Verizon brass explain when they first learned Smith’s subpoena sought phone records that included members of Congress and when they discovered it had provided "tolling data" connected to those members and transmitted it to Smith.
Fox News Digital reached out to Verizon for comment.
Grassley’s new letter suggests the October 2023 exchange may be the key to determining whether Verizon merely missed the subpoena or discovered it and failed to disclose it.
"On what date were Daniel Schulman, Vandana Venkatesh, Hans Vestberg, and Craig Silliman first informed about the May 25, 2023, subpoena?" they asked of Verizon’s front office.
The senators also asked that Verizon explain its "human error" revelation in more specificity and produce internal records from May 2023 to October 2025 that discuss whether the company believed it was obligated to notify the implicated members of Congress or the Senate Sergeant-at-Arms (SAA).
The "human error" explanation also left unanswered why Smith’s May 25, 2023, "Arctic Frost" subpoena was omitted from Verizon's review of legal process involving SAA phone lines, even though the company acknowledged that two SAA numbers were included in the subpoena.
In 2025, documents provided to Grassley revealed Verizon complied with Smith while AT&T resisted the requests.
Boasberg directed Verizon and AT&T not to disclose the subpoenas to lawmakers for a period of one year.
The DOJ has issued subpoenas for lawmakers' information in the past, but former inspector general Michael Horowitz cautioned against it except in limited circumstances in a report published in 2025, saying that doing so "risks chilling Congress’s ability to conduct oversight of the executive branch."
Grassley’s letter gives Verizon until Aug. 13 to explain when it knew senators’ records were involved, who inside the company was informed and why the May 2023 subpoena did not surface in its earlier response to Congress.
Senate Judiciary Committee Republicans have branded Smith's "Arctic Frost" as "worse than Watergate."
Fox News Digital reached out to counsel for Smith for comment.
