A court-appointed monitor said he was looking into allegations that a union official was punished for resisting actions that would have benefited the union president’s partner and her sister.
Actors and writers won strict limits on artificial intelligence in last year’s contract negotiations, but editors and artists face a growing challenge.
The United Automobile Workers had backed President Biden but did not immediately endorse the vice president. Ms. Harris will rally with U.A.W. members in Detroit next week.
Last week’s Democratic National Convention surfaced differences over the war in Gaza that could widen fissures between labor activists and union officials.