A liberal group, Moveon.org, is running a cable TV ad in Ohio critical of the National Rifle Association (NRA) - one that is clearly aimed at putting pressure on Ohio's junior senator, Republican Rob Portman, according to the Huffington Post.
The ad features an Ohio resident, Jerry Thompson - a gun owner and Moveon.org member - saying that after the NRA's "disgusting response" to the the Sandy Hook Elementary School shootings, "I've had enough."
Interest in "smart guns," using biometrics and radio frequency technology, has rebounded following recent gun violence. President Obama has included them as part of his plan to reduce such mass shootings. Who makes these guns? How do they work? And will they catch on? Ann Thompson reports in "Focus on Technology."