Bill McMorris reports for the Washington Free Beacon on an interesting development linked to an Obamacare tax and the nation’s most powerful labor unions.

Some of the most powerful labor unions in the country are calling on the White House to approve the repeal of an Obamacare tax on employer-sponsored health plans that could lead to benefit cuts.

Terry O’Sullivan, president of the Laborers’ International Union, on Tuesday afternoon joined labor and business interest groups as part of the Alliance to Fight the 40 aimed at dismantling Obamacare’s so-called Cadillac insurance tax. The “Cadillac” label applied by Obamacare defenders is inaccurate, according to the union bigwig. He referred to the tax as “despicable,” “regressive,” “unwise, unjust, and unfair” during a three-minute opening statement at an Alliance teleconference.

“This is not a tax on high end health plans. This tax will hit … middle and working class families,” he said. “This tax is a kick in the face to every hardworking, blue collar, and middle class family in the country.”

O’Sullivan has been an opponent of certain aspects of Obamacare since it passed. He told the 2013 AFL-CIO convention that “if the Affordable Care Act is not fixed and it destroys the health and welfare funds that we have all fought for and stand for, then I believe it needs to be repealed.” He stuck by that statement on Tuesday.