House Democrat puts forward bill to end "Stand Your Ground" laws

With no explanation for why the Zimmerman/Martin shooting was related to "Stand Your Ground" laws, Rep. Frederica Wilson (D-Fla.) has introduced a new bill to ban these laws.  Wasn't it just over the last month or so that Democrats were talking about letting states make these decisions?

. . . The House Democrat who represents Trayvon Martin’s district will soon propose legislation repealing the nation's “Stand Your Ground” laws, which are under a microscope following the shooting death of the Florida teenager earlier this year.
Rep. Frederica Wilson (D-Fla.) said eliminating such laws might have prevented February’s fatal confrontation between the 17-year-old Martin, an unarmed African-American, and George Zimmerman, 28, an Hispanic neighborhood watch volunteer . . .