But not everyone in New Haven is happy about the Cancer Center. For the past seven years, the Service Employees International Union (SEIU), one of the largest unions to drop out of the AFL-CIO this summer, has been trying to force YNHH workers to join. They have managed to get most of the city's politicians, labor leaders and religious figures behind them in holding up construction until the hospital agrees to their plans of compulsory and monopolistic unionization.