Jamn that Law
Some churches in Mexico have gone beyond lectures and taken the James Bond-as-disciplinarian route to combat sacrilegious cell phone use. The churches have installed short-range cell phone signal jammers to thwart members of their flock who lack cell phone self-control during mass.
The jammers have caught on in Japan, India, and France but their use is illegal in the United States.
Link.
We don't know the pros and cons behind the anti-jamming law, but pending a convincing "pro" reason (e.g., jamming equipment causes cell phone problems outside one's premises), we say, "Let 'em jam."