WASHINGTON — The National Rifle Association and gun-control advocates, including the husband of wounded former Rep. Gabrielle Giffords, are facing off at the year's first Senate hearing on what lawmakers should do to curb gun violence.

The two sides were squaring off Wednesday before the Senate Judiciary Committee, whose own members are divided in a microcosm of the debate that gun limits will face on their way through Congress. The hearing is a direct response to the Dec. 14 shooting rampage that killed 20 first-graders and six adults at Sandy Hook Elementary School in Newtown, Conn., and transformed gun control into a top-tier issue in the capital.

"The time has come to change course," Sen. Dianne Feinstein, D-Calif., one of Congress' leading gun-control advocates, said Tuesday. "And the time has come to make people safe."