President Trump revoked the security clearances of 37 current and former national security officials, many of whom worked on Russia analysis or foreign threats to U.S. elections, according to a memo from the Office of the Director of National Intelligence.

The list included Shelby Pierson, the former election threat official in the first Trump administration who warned Congress about Russian meddling in the 2020 election and is now a senior official at the National Geospatial-Intelligence Agency, which analyzes spy satellite imagery.

Also on the list were a senior C.I.A. analyst currently serving undercover and Vinh X. Nguyen, a senior National Security Agency data scientist.

Rescinding security clearances appears to be part of a campaign by Tulsi Gabbard, the director of national intelligence, to draw attention to what she sees as flaws in intelligence assessments about Russian malign influence operations during the 2016 election. Ms. Gabbard’s attention to that issue has won praise from Mr. Trump.

Critics have said Mr. Trump has turned the focus onto the 2016 election, which he won, to distract from questions about the disgraced financier Jeffrey Epstein.

The move is just the latest effort by the Trump administration to shift the public’s attention to the 2016 election. Ms. Gabbard has released a series of documents related to the intelligence inquiry and accused the Obama administration of a “treasonous conspiracy.” Pam Bondi, the attorney general, has announced a task force to look into potential wrongdoing. John Ratcliffe, the C.I.A. director, declassified a tradecraft review related to the 2016 inquiry, and made a referral to the F.B.I. seeking an investigation of John O. Brennan, the former C.I.A. head.