The largest union in the U.S., the Service Employees International Union (SEIU), begins its national convention the weekend of May 31, in San Juan, Puerto Rico. Convention goers will have a very different experience from the well orchestrated ceremonies of past years. As delegate Sirlena Perry from SEIU Local 73 in Chicago put it, “There’s going to be big debate about how Andy has been doing things,” referring to the pro-business methods of SEIU’s president, Andy Stern.

In the recent past, a fight inside the SEIU (Service Employees International Union), the second largest union in the country, has broken into the open. The leader of California’s United Healthcare Workers-West (UHW) union, Sal Roselli, has resigned from SEIU’s executive board. His resignation came amid charges that SEIU’s international leadership was taking control over local negotiations with employers, leaving the workers without a voice in their contracts.