WASHINGTON – Guns and police officers in all American schools are what's needed to stop the next killer "waiting in the wings," the National Rifle Association declared Friday, taking a no-retreat stance in the face of growing calls for gun control after the Connecticut shootings that claimed the lives of 26 children and school staff.

"The only thing that stops a bad guy with a gun is a good guy with a gun," said Wayne LaPierre, the group's chief executive officer.

Some members of Congress who had long scoffed at gun-control proposals have begun to suggest some concessions could be made, and a fierce debate over legislation seems likely next month. President Barack Obama has demanded "real action, right now."