WASHINGTON (AP) — Republican Sen. Chuck Grassley has released an unclassified document that Republicans claim is significant in their investigation of Hunter Biden. Republicans say the information is significant as they probe the financial affairs of the President Joe Biden’s family, reviving previously debunked claims of financial wrongdoing. House Oversight Chairman James Comer had issued a subpoena to the FBI for the document. It was made public for the first time Thursday. It involves claims a confidential informant made in 2020 about Hunter Biden’s alleged business dealings when he served on the board of Ukrainian energy company Burisma. The White House rejected the information as having been “debunked for years.”