Henry emerged from relative obscurity within the SEIU to replace Andy Stern, an outsized and frequently controversial figure in the labor movement. A 30-year veteran of the organization, she has cut a lower profile at its helm, with a focus on growing the union's rank-and-file. But with about 1.8 million workers under the SEIU banner, Henry commands a grassroots army that will be critical to Democratic efforts in the 2012 elections.
