Sen. Roy Blunt of Missouri said Monday federal gun laws won't change in the wake of the Sandy Hook massacre.
And, the Republican said, he would not support any legislation that would limit Americans' access to weapons.
Asked about Sen. Dianne Feinstein's proposal to ban sale or importation of so-called assault weapons, Blunt said "(I) don't have any reason to know that that has much to do with this (incident) right now.
"I'm sure I would vote against anything that impacts, in a negative way, the Second Amendment."
Blunt said the federal government should work on ways to encouraging state and local agencies to share information about mental illness and mentally-ill patients.
Asked if hiring armed guards at schools was a good idea, Blunt said "I don't know that it is."
Gun ownership "is an important right, and it is in the Constitution," Blunt said. "These laws are not going to change in the near future."
Blunt toured the Tolbert Academy charter school at 34th and Paseo, meeting with schoolchildren roughly the same age as those at Sandy Hook Elementary.
Blunt also told reporters that President Barack Obama and House Speaker John Boehner are "heading in a direction that could produce a result" on the fiscal cliff.
Boehner and Obama met Monday. The Republican had recently proposed a compromise that would raise tax rates on those earning more than $1 million annually, in exchange for cuts in entitlement spending.