Giffords was what, the first person shot? Second? Third? Fourth? Fifth? Sixth? Seventh? Eighth? Ninth? Tenth? ...
How, Ms. McCarthy, is this limitation relevant to that which allegedly initiates it?
Good for McCarthy! Now a lunatic can safely walk up to 10 unarmed, law-abiding citizens and kill them. But no MORE than 10 murders, that would be ILLEGAL!