Conservative media figures are responding to former White House Russia adviser Fiona Hill’s testimony in Thursday’s impeachment inquiry hearing by trying to restore some credibility to another debunked conspiracy theory: the idea that Ukraine had tried to interfere against Donald Trump in the 2016 election.

Hill, previously an aide to Trump’s former national security adviser John Bolton, has been one of many witnesses to testify that Trump pressured Ukraine to investigate not only Democratic 2020 presidential candidate Joe Biden, but also conspiracy theories about the 2016 U.S. presidential election. (Indeed, it was one of the subjects Trump mentioned on his July 25 phone call with Ukrainian President Volodymyr Zelensky.) Hill has also called this theory about Ukrainian election interference “a fiction,” and she added, “We should all be greatly concerned about what the Russians intend to do in 2020.”

The conspiracy theory relies heavily on a Politico article from January 2017, co-written by Ken Vogel and David Stern, which singled out Democratic consultant Alexandra Chalupa’s communications with the Ukrainian Embassy in Washington.

Fox News chief political anchor Bret Baier even brought up this Politico story in trying to counter Hill’s testimony: