Federally led law enforcement task forces and intelligence information sharing centers are ubiquitous in domestic policing. They are launched at the local, state, and national levels and respond to a variety of challenges such as violent crime, criminal gangs, terrorism, white-collar crime, public corruption, even intelligence sharing. This report focuses on those task forces and information sharing efforts that respond to federal counterdrug and counterterrorism priorities in the Southwest border region. More generally, the report also offers context for examining law enforcement coordination. It delineates how this coordination is vital to 21st century federal policing and traces some of the roots of recent cooperative police endeavors.