SEIU has a large number of members that provide healthcare, so they are active in what goes on. So does AFSCME and several other unions. I'm AFSCME BTW. I'm currently support staff for the Omaha Police Dept.
http://www.seiu.org/seiuhealthcare/
SEIU Healthcare, the healthcare arm of the Service Employees International Union (SEIU), is the largest healthcare union in North America with more than 1.1 million members.
We are doctors and nurses, home care and nursing home workers; we are lab techs, environmental service workers and dietary aides. We are front-line healthcare workers who care for more than 60 million patients across 29 states and two countries. We are caregivers in hospitals, health centers, nursing homes, in-home care and in our communities.
Launched in 2007 with a vision of uniting healthcare workers throughout the United States, Canada and Puerto Rico and delivering the highest quality care to all, we are living this vision today.