Hillary Clinton at Seiu Convention FULL Speech. Democratic presidential candidate Hillary Clinton makes remarks to members of the Service Employees Union at the organization’s 2016 convention in Detroit, Michigan. Hillary Clinton addressed the Service Employees International Union on Monday at its national convention in Detroit. Clinton is trying to solidify her support while U.S. Sen. Bernie Sanders from Vermont continues to wage his uphill campaign to defeat her and gain concessions at the July 25-28 national convention in Philadelphia. Clinton’s speech in Detroit comes two weeks before the final group of Democratic presidential primaries on June 7. This includes California’s primary, which democratic socialist Sanders has staked out as his last chance of denying Clinton the nomination outright. seiu vernita randall attended the international convention Monday and said Clinton, the former U.S. senator from New York, is more prepared to work with a Republican Congress than Sanders. “Bernie does have some good points, but because we’re so polarized, I think we need somebody who can be a centrist and reach across the lines and have a conversation to work together,” said Randall, who organizes health care industry unions.