Democratic U.S. senator blasts Graham's subpoena push as political attack

A senior U.S. Democrat on Thursday accused the Republican chairman of the powerful Senate Judiciary Committee of trying to misuse subpoena powers for an attack on President Donald Trump's political rival Democrat Joe Biden.Senator Dianne Feinstein, the judiciary panel's top Democrat, said Senator Lindsey Graham wants "unbridled authority to go after Obama-era officials," including Biden's presidential campaign chairman, Steve Ricchetti, "to bolster the president's conspiracy theories."Ricchetti