FILE - In this Jan. 30, 2013 file photo, former former U.S. Rep. Gabrielle Giffords, who survived a gunshot to the head in 2011, during a mass shooting in Tucson, Ariz., sits ready with her husband, retired astronaut Mark Kelly, at a Senate Judiciary Committee hearing on Capitol Hill in Washington to discuss legislation to curb gun violence. Giffords and Kelly are scheduled to be in Denver, Monday, March 4, 2013 to testify in support of at least one of the seven gun-control bills being considered by the Colorado Legislature. Eileen McCarron, president of the Colorado Ceasefire Capitol Fund, says Kelly will speak in support of a House bill that requires all private gun sales and transfers to be subject to a background check. (AP Photo/J. Scott Applewhite, File)
TUCSON, Ariz. (AP) -- Former Rep. Gabrielle Giffords is returning to the site of a shooting that left her critically wounded to urge key senators to support expanded background checks for gun purchases.
She's scheduled to speak to reporters Wednesday in the parking lot of a Safeway grocery store outside Tucson to promote tougher firearm regulations.
The Democrat was among 13 people wounded in the January 2011 shooting rampage as she met with constituents. Six people were killed.
Other survivors are expected to join Giffords at the news conference.
A gun control group started by Giffords and husband Mark Kelly began airing a new television ad in Arizona and Iowa Tuesday calling for background checks.
Sheriff's deputies are at the event to provide security.
