TUCSON, Ariz. (AP) — Former Rep. Gabrielle Giffords returned to the site of a shooting that left her critically wounded to urge key senators to support expanded background checks for gun purchases.

She spoke to reporters Wednesday in the parking lot of a Safeway grocery store outside Tucson to promote tougher firearm regulations. Giffords spoke a mere 15 words during the news conference, including "Fight, fight, fight."

The Democrat was among 13 people wounded in the January 2011 shooting rampage as she met with constituents. Six people were killed.