NEW ORLEANS (AP) — After waiting about as long as possible, the state of Louisiana began selling marriage licenses to same-sex couples and agreed Thursday that they could file joint income-tax returns and get both parents' names on their children's birth certificates. Married same-sex couples also will be able to get both of their names on their children's birth certificates, whether the child is adopted or born to one member of the couple, said Kyle Duncan, attorney for the Department of Health and Hospitals. The state holdout didn't prevent same-sex marriages from being conducted in New Orleans — Louisiana's first gay marriage was Monday in Orleans Parish Civil District Court after the couple got their license in neighboring Jefferson Parish. The head of Louisiana State Police said earlier that members of same-sex couples who want their married name on their driver's licenses can make that change starting Monday.