Nevada Assembly Democrats William Horne and Lucy Flores work on the Assembly floor at the Legislative Building in Carson City, Nev., Monday, March 11, 2013. Horne introduced a measure

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Nevada Assembly Democrats William Horne and Lucy Flores work on the Assembly floor at the Legislative Building in Carson City, Nev., Monday, March 11, 2013. Horne introduced a measure Monday that mandates background checks for private gun sales, bans the possession of armor-piercing bullets and imposes a tax on all firearm sales with proceeds benefiting mental services. (AP Photo/Cathleen Allison) less 

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Associated Press
Tue, Mar 12, 2013 5:43 PM EDT