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On Monday, Sen. Bernie Sanders reiterated his endorsement of Hillary Clinton, the Democratic Party nominee. On Tuesday, it was made official during the roll call vote, when Sanders himself stood among his Vermont delegation and moved that Clinton be nominated by acclamation. But on Wednesday, some delegates in the Sanders camp complained that Democratic Party officials who manage the convention had treated them as something less than their Clinton-pledged counterparts. Michael Wilson, a Sanders-pledged delegate from California, told me that floor officials attempted to confiscate…