Paul Ryan's chief of staff would not confirm or deny whether he has been contacted by special counsel Robert Mueller about how a Ukraine-related provision was killed at the 2016 GOP convention

Paul Ryan's chief of staff would not confirm or deny whether he has been contacted by special counsel Robert Mueller about how a Ukraine-related provision was killed at the 2016 GOP convention https://t.co/x5fE4bVJcF via @KyleDCheney pic.twitter.com/AVV1XUuq81

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