The Justice Department will drop all charges against former Sen. Ted Stevens of Alaska, NPR has learned.
It added that Attorney General Eric Holder decided the conviction could not be defended thanks to problems with the prosecution.
Stevens was convicted last fall of failing to disclose hundreds of thousands of dollars in gifts from oil-services contractor Bill Allen.
But the case was marred by allegations of prosecutorial misconduct, which have only intensified since the conviction, and have delayed Stevens’ sentencing.
The former Alaska GOP senator lost his bid for reelection last year to Democrat Mark Begich.