The one who said they wouldn't endorse either candidate because there was no consensus.
Every day since several local or regional or state Teamsters have come forward endorsing Harris. Pretty obvious by now the head guy cut a deal under the table with Trump and was going to endorse Trump, realized he couldn't so made the announcement of no endorsement which seemed bad for Harris. There's rumblings now that Sean O'Brien is in danger of being replaced by the Teamsters because of this.