Hillary Clinton or her representatives have, on at least two occasions, declined to accept legal papers delivered in connection with Tulsi Gabbard’s lawsuit against her, Gabbard’s attorney claims. Gabbard, a Democratic congresswoman from Hawaii who is seeking the party's 2020 presidential nomination, filed a $50 million lawsuit against Clinton last week over the former secretary of state’s insinuation that Gabbard was a “Russian asset.” Brian Dunne, an attorney representing Gabbard, told the New York Post that Secret Service agents turned away a process server Tuesday when the server tried to deliver the lawsuit to Clinton’s home in Chappaqua, N.Y., north...