JEFFERSON CITY, Mo. (AP) - When a gunman killed 26 children and staff at a Connecticut grade school, Missouri state Rep. Mike Kelley quickly proposed legislation that would allow trained teachers to carry hidden guns into the classroom as a "line of defense" against attackers.
Similar bills soon proliferated in Republican-led states as the National Rifle Association called for armed officers in every American school.
Yet less than four months later, the quest to put guns in schools has stalled in many traditionally gun-friendly states after encountering opposition from educators, reluctance from some governors and ambivalence from legislative leaders more focused on economic initiatives.
In this Dec. 27 photo, Cori Sorensen, a fourth grade teacher from Highland Elementary School in Highland, Utah, receives firearms training with a .357 magnum from personal defense instructor Jim McCarthy in West Valley City, Utah, where teachers and administrators are allowed to bring guns to school.
The loss of momentum highlights how difficult it can be to advance any gun legislation, whether to adopt greater restrictions or expand the rights to carry weapons.
Since the Dec. 14 shooting at Sandy Hook Elementary School in Newtown, Conn., legislators in at least four states - Connecticut, Colorado, Maryland and New York - have passed significant gun-control measures. The Newtown attack came less than five months after a gunman killed 12 people and injured 70 at a Colorado movie theater.
So far, South Dakota is the only state to respond with a new law allowing school personnel to carry guns into elementary and high schools. Similar legislation is awaiting the governor's signature in Kansas. And Arkansas has enacted a new law allowing colleges to let staff with concealed gun permits bring their weapons on campus.
But Kelley has shelved legislation that would have let Missouri school staff carry firearms if they have concealed gun permits. His legislation never received a public hearing even though he is a House majority whip responsible for rallying Republican support for bills.
Kelley, an NRA member, tried to cast the bill's demise in a positive light.
"It's done the No. 1 thing that I wanted, and that's to bring awareness to schools about some of their safety issues," he said.
House Speaker Tim Jones vowed this past week that Missouri's Republican supermajorities would still pass some sort of pro-gun measure this year. But it's unlikely to involve arming teachers.
In Oklahoma, where pro-firearms measures usually get a warm reception from lawmakers, gun-rights advocates faced an uphill battle against educators opposed to any effort to allow guns in schools.
A bill letting schools develop policies for arming trained employees died in the Senate Education Committee.
"As a rule, it's very difficult to find educators and administrators that support the idea of putting arms in the schools, for whatever reason," said Rep. Steve Martin, chairman of the Oklahoma House Public Safety Committee.