The FCC’s Consumer and Governmental Affairs Bureau (CGB) 
kicked off an initiative on “bill shock” — seeking input on ways to alert consumers about potential high charges for mobile service.
In the European Union, carriers are required by law to send text messages to consumers when they are running up roaming charges or getting close to a set limit for data roaming. The FCC is now considering whether the same practice should be enforced in the U.S.
http://www.fcc.gov
