2011-03-26T205345Z_01_PJM05_RTRIDSP_0_USA

They were for it before they were against it and now, some of the country’s most powerful union leaders are expressing their full disapproval of Obamacare.

The leaders of three major U.S. unions, including the highly influential Teamsters, have sent a scathing open letter to Democratic leaders in Congress, warning that unless changes are made, President Obama’s health care reform plan will “destroy the foundation of the 40 hour work week that is the backbone of the American middle class.”

If that’s not bad enough, the Affordable Care Act, if not modified, will “destroy the very health and wellbeing of our members along with millions of other hardworking Americans,” the letter says.