Comment Out-of-date laws are the culprit (Score 5, Informative) 315
While the Lenihan order and decision did say that the government cannot demand location information without a search warrant, that decision has been appealed by the current administration. And even if the DOJ loses that appeal, the decision would only apply to a limited section of the country - other courts could decide differently.
The bigger issue is that electronic communications laws are badly out-of-date. There are so many grey areas and loopholes that Sprint and the DOJ can easily argue with a straight face that GPS records are not protected by the Constitution, are not protected by federal or state law, can be demanded without a search warrant, can even be voluntarily handed over with no process whatsoever, do not have to be logged, and do not require anyone ever to tell the person whose location information was collected that they were tracked. And while the courts often do get it right eventually, that's a really slow battle - we need a better approach than that.
We (the ACLU) are launching a new campaign, Demand Your dotRights, to push companies and lawmakers to provide real protections for our personal information. The "Electronic Communication Privacy Act," which is supposed to protect information like GPS records, was passed in 1986(!) - it just doesn't fit any more.
We hope you will all sign on and join our efforts to push Sprint, lawmakers, and others to respect individual privacy. It clearly won't be an easy battle (seeing how Sprint is actually proud of its "over 8 million GPS record requests served" title), but with enough support, we hope to make a difference - and we could use your help!