The American National Security Agency has admitted last week that they have been experimenting with tracking data from US mobile phones, but according to the agency none of the information has been used.
The NSA was put in a hard position, because documents that whistleblower Snowden leaked talked about tracking mobile data on large scale. Although the NSA did not speak much about the goals of the experiment, they did say only information was gathered and none of the information has been or will be analyzed. It is unclear if this means the experiment was a success or a failure.
Meanwhile in Europe, it seems government organizations have an easier time tracking and using mobile phone data. Although European governmental organizations cannot collect the data themselves, they can request mobile providers to share data for certain users. Since government organizations have to pay the cost for retrieving the data and it can only be requested with a valid reason, it is not expected the regulations are being abused by government organizations.