Vice President Kamala Harris held a sometimes tense meeting with Teamsters leaders Monday, defending the Biden administration’s labor policies against pointed questions and concluding with a promise that she would win the presidency and treat the union fairly with or without its backing.

While Harris has the endorsement of most of the nation’s unions, the International Brotherhood of Teamsters, whose truck drivers, freight workers and other members are divided in their political allegiances, has held out. Sean O’Brien, the union’s combative president, said after the meeting that he could announce an endorsement — if there was an endorsement — as soon as Wednesday.

John Palmer, a Teamsters executive board member and vice president at large, said the meeting had lasted a little more than an hour. He praised Harris for parrying questions on the role President Joe Biden played in averting a rail strike in late 2022 and the ways the White House could have been more helpful in a Teamsters dispute last summer with United Parcel Service.

Harris repeatedly castigated her opponent, former President Donald Trump, for appointing anti-union members to the National Labor Relations Board when he was president and reminded the Teamsters that Biden had shored up pensions for thousands of union members.

At the end of the meeting Harris told the leaders of the union, which has 1.3 million members, “I’m confident I’m going to win this,” according to Palmer. She also said, “I want your endorsement, but if I don’t get it, I will treat you exactly as if I had gotten your endorsement,” he added — a characterization that Harris’ campaign aides did not contradict.

Contrast with Trump

After the meeting, O’Brien said he still needed time to consider the union’s next move. Harris opened the meeting by saying she understood she might not get the union’s endorsement and that some Teamsters would be voting on issues beyond labor, such as the border, according to another person in the room.

That person said she had asked that Teamsters leaders educate their members about the bipartisan border control bill that she had backed and that Trump had killed. She also recalled how Trump had told Elon Musk that striking workers should be fired, and she said to them, “Listen to the guy when he’s told you who he is.”

Convention slot

O’Brien had asked for speaking slots at both party conventions, and was given a prime-time slot by the Republicans but not by the Democrats. He has met with Trump at his Palm Beach, Fla., mansion and in Washington.

Biden has been lauded by many union presidents as the most pro-labor president in history. He walked the picket line with striking United Auto Workers and included pro-union measures in his signature domestic achievements, the infrastructure bill, the CHIPS and Science Act and the Inflation Reduction Act.

But allies of O’Brien indicated that they were still angry that Biden signed legislation ending a rail strike and imposing a labor agreement between rail companies and workers. Harris said the move had been initiated by Congress, not the president. They also hit her for not preemptively saying the White House would play no role in settling the Teamsters’ dispute with UPS.

The protracted holdout has divided the union. The Teamsters National Black Caucus, along with some prominent union locals, went ahead and endorsed Harris, raising the pressure on O’Brien. But he insisted that no endorsement could be made before the conventions and then said that no decision could be reached before an in-person meeting with Harris.

“I think he knows he’s on his heels and is looking for a way forward without admitting he made a mistake,” Palmer said.

A spokesperson for O’Brien did not respond to repeated requests for comment.