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CHARLOTTE, NC - SEPTEMBER 06:  Former U.S. Rep. Gabrielle Giffords (D-NV) walks on stage with Democratic National Committee Chair, U.S. Rep. Debbie Wasserman Schultz (D-FL) during the final day of the Democratic National Convention at Time Warner Cable Arena on September 6, 2012 in Charlotte, North Carolina. The DNC, which concludes today, nominated U.S. President Barack Obama as the Democratic presidential candidate.  (Photo by Joe Raedle/Getty Images)
CHARLOTTE, NC - SEPTEMBER 06:  Former U.S. Rep. Gabrielle Giffords (D-NV) walks on stage with Democratic National Committee Chair, U.S. Rep. Debbie Wasserman Schultz (D-FL) during the final day of the Democratic National Convention at Time Warner Cable Arena on September 6, 2012 in Charlotte, North Carolina. The DNC, which concludes today, nominated U.S. President Barack Obama as the Democratic presidential candidate.  (Photo by Joe Raedle/Getty Images)

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Giffords takes on NRA

Former Rep. Gabrielle Giffords and her husband, Mark Kelly, launch a political action committee to prevent gun violence.

Giffords takes on NRA

Former Rep. Gabrielle Giffords and her husband, Mark Kelly, launch a political action committee to prevent gun violence.