The president of the International Brotherhood of Teamsters stated on Sunday that his organization has not yet endorsed a candidate in the 2024 presidential race because he has not had a meeting with Vice President Kamala Harris after speaking at the Republican National Convention in July and praising former President Donald Trump.

Teamsters president Sean O’Brien noted during an interview with CBS on Sunday that “you don’t hire someone unless you give them an interview.”

The Teamsters, one of the largest unions in the U.S. with 1.3 million members, is the only major union among the top 10 that has not yet endorsed the Democratic nominee.

The Teamsters, known for their historical support of Democratic presidential candidates, typically make their endorsement after both the Democratic and Republican conventions. However, O’Brien indicated that this election cycle is different.

Notably, O’Brien made headlines by speaking at the Republican National Convention in July, becoming the first leader in the organization’s 121-year history to address the RNC.

“This time, under our leadership, we brought every single candidate to the table in front of our rank and file members and our general executive board, and we’re waiting on Vice President Harris to commit to come meet with us,” O’Brien said on CBS’ “Face the Nation.”

O’Brien also said that the Teamsters, unlike other major unions, have a more divided political affiliation, underscoring the importance of engaging in discussions with all presidential candidates. The union leadership has already met with Trump and President Biden earlier this year, the outlet reported.

“Half of our members are Republicans, half of our members are Democrats. So we have to serve all of our membership equally,” O’Brien said. “And you know, this is our opportunity to ask her (Harris) about Teamster specific issues and also labor issues. So until we have that meeting, you know, obviously we will wait to make that determination.”

The Harris-Walz campaign said before the DNC that Harris has agreed to a roundtable with the Teamsters, but that meet-and-greet has yet to happen. Also, the DNC never responded to the Teamsters’ request to address the Democratic National Convention.

“Whenever I get an opportunity to highlight the American worker, especially the Teamster worker, I’m going to take any and all venue,” O’Brien said Sunday. “We asked both conventions, respectively, at the same time, and the Republican National Convention immediately responded to us. Didn’t try and edit any of our messages, and I was hopeful that the Democrats would do the same, but they didn’t.

“I’m not upset about it, but I can tell you this, my rank-and-file members, who have been lifelong Democrats, are not happy about it,” he said.