For the first time since 1996, the International Brotherhood of Teamsters is declining to make a U.S. presidential candidate endorsement.

The 1.3 million-strong union announced the long-awaited decision from its general executive board on Wednesday. Alleging that both Republican candidate Donald Trump and Democratic candidate Kamala Harris had failed to make “serious commitments to our union to ensure the interests of working people are always put before Big Business,” Ibt general president Sean O’Brien said in a statement that in 2024 “no candidate for President has earned the endorsement” of his union.

Specially, O’Brien added, the candidates did not pledge to avoid intervening in Teamsters-represented industries and in Teamsters campaigns. (In 2022, Congress stepped in during contract negotiations to prevent a national railroad strike and “tens of thousands of railroad Teamsters were forced to accept a new contract implemented by Congress without member support,” the union argued.) The general president also said...