More on the Supreme Court ruling forcing FBI to turn off 3,000 GPS trackers

At ABC News, a thorough "explainer" by Ariane de Vogue on the January Supreme Court ruling that requires the FBI to immediately stop using GPS tracking devices to spy on suspects. Today, FBI Director Bob Mueller said the Bureau will cooperate, but not without complaint: "Trackers enabled us to utilize resources elsewhere, so it is going have an impact on the work that we do but of course we will comply with the ruling."