On Wednesday, delegates to the AFL-CIO’s convention in Los Angeles passed Resolution 54, which criticized the Affordable Care Act — also known as Obamacare — and demanded major changes to the law. Unions fear the law will undermine the multi-employer pension plans they provide to their members.

Joseph Nigro, president of the Sheet Metal Workers International Association, was among those who backed the resolution. In his remarks on the floor, he said this was a “make or break” issue for the future of the entire AFL-CIO: