Patel is the author of a children's picture book, titled The Plot Against the King, that claims that the Steele dossier was used as evidence to initiate the investigations into Russian interference in the 2016 United States elections. Illustrated by Laura Vincent, the book was published in May 2022 by Brave Books.[44][45]

... On June 19, 2022, Trump sent a letter to the National Archives naming Patel and John Solomon as "representatives for access to Presidential records of my administration".[46]

In 2022, Patel created Fight With Kash, a tax-exempt 501(c)(3) charity, to raise donations for "helping other people" in need, though more specifically to bring "America First patriots" together and "helping fight the Deep State." Patel said he "funded whistleblowers campaigns," which Democrats on the Republican-controlled House Judiciary weaponization subcommittee said included former FBI employees the FBI claimed endorse "an alarming series of conspiracy theories related to the January 6 Capitol attack ... and the validity of the 2020 election."

During a December 2023 appearance on the Steve Bannon "War Room" podcast, Patel concurred with Bannon's assertions that Donald Trump is "dead serious" about his intent to seek revenge against his political enemies should he be elected in 2024. Patel stated:

"We will go out and find the conspirators — not just in government, but in the media ... we're going to come after the people in the media who lied about American citizens, who helped Joe Biden rig presidential elections ... We're going to come after you. Whether it's criminally or civilly, we'll figure that out.

But yeah, we're putting you all on notice, and Steve, this is why they hate us. This is why we're tyrannical. This is why we're dictators ... Because we're actually going to use the Constitution to prosecute them for crimes they said we have always been guilty of but never have.[47]
Patel's remarks came during concurrent reporting in The New York Times about "a series of plans by Mr. Trump and his allies that would upend core elements of American governance, democracy, foreign policy and the rule of law if he regained the White House.