Mr. Biden is under investigation for several potential offenses, including whether he had lied on a federal firearms application in 2018 when asked if he was addicted to drugs. It is unclear if Mr. Weiss is receptive to that suggestion. A spokeswoman for Mr. Weiss did not immediately respond to a request for comment. At the time, Mr. Biden was struggling to remain sober. But such federal prosecutions are relatively rare, and seldom pursued as stand-alone charges.

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Persons: Biden, Christopher Clark, Weiss, Hunter Biden, Bryan David Range, Hunter Biden’s Organizations: U.S ., Appeals, Third Circuit, Department, Alcohol, Tobacco, Firearms, Explosives Locations: U.S, Delaware, Pennsylvania