A top House Republican pressed FBI Director Christopher Wray on Thursday about whether the bureau has been investigating Democratic presidential candidate Joe Biden’s son, Hunter, following a GOP Senate report about allegations of corruption.

Rep. Jim Jordan of Ohio, the ranking member on the House Judiciary Committee, told Wray in a two-page letter that Sen. Chuck Grassley of Iowa and Sen. Ron Johnson of Wisconsin had “released an explosive report detailing misconduct and potential criminal activity during the Obama-Biden Administration” and asked “what investigative steps — if any — the Federal Bureau of Investigation has taken in response to the information in this report.” The congressman contended that the report “shows that the FBI has been aware of some alleged misconduct for years” and “detailed widespread concern within the Obama-Biden Administration about Hunter Biden’s role on the board of Burisma Holdings.”