The potentially damning accusations were aired in a letter to the agency's inspector general Monday, penned by New York Rep. Carolyn B. Maloney, and Mississippi's Bennie Thompson.
The note saw the two prominent progressives accuse Inspector General Joseph V. Cuffari of overseeing the cover-up, and insisted he step aside from his post as the House continues to investigate the 2021 riots.
The embattled Homeland security official, who serves as the agency's watchdog, has med denouncement after it was announced he first learned of the missing messages in May 2021 - months earlier than previously known and more than a year before he cautioned the House that potentially crucial information may have been erased.
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It comes as part of a deepening investigation into the agency's handling of the now-deleted texts, which the reps argue may have provided evidence that agents got instruction from higherups during the brazen daytime raid.
"We are writing with grave new concerns over your lack of transparency and independence, which appear to be jeopardizing the integrity of a crucial investigation run by your office," Maloney, who further works as the House Oversight Chair Carolyn and Homeland Security Chair Bennie Thompson wrote in the letter.
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"According to recent reports, your office learned that the Secret Service was missing critical text messages as part of your investigation of the January 6 attack against the U.S. Capitol in May 2021 - seven months earlier than previously revealed."
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The high-powered Dems went on: "The Committees have obtained new evidence that your office may have secretly abandoned efforts to collect text messages from the Secret Service more than a year ago."
"These documents also indicate that your office may have taken steps to cover up the extent of missing records, raising further concerns about your ability to independently and effectively perform your duties as Inspector General (IG)."
The letter further blamed the agency for knowingly declining to hand over the messages despite the House's probe, which started just over a year ago in July in 2021.
It called for two of the office’s top employees to testify this month regarding the deleted texts and their contents, and asked that an immediate replacement be named for Cuffari.
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The Secret Service, in the meantime, maintains that the text messages lost on at least 10 agents' phones days after the riots were lost as a result of a previously scheduled data migration of agents' cell phones that started on January 27, 2021.
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