AFGE?
http://www.afge.org/index.cfm?page=C...ocumentID=1200
"With members in members in CBP, Border Patrol, ICE, CIS, FEMA, FLETC and TSA, AFGE represents employees in EVERY Department of Homeland Security Agency. We are the nation's homeland security union. But don't take our word for it. AFGE may speak on your behalf, but we don't speak for you. Hear what your fellow employees have to say. And come election time, vote for AFGE as the sole representative for CBP. AFGE. One DHS, One Union, One Voice"
Maybe them?