Pittsburgh Mayor Bill Peduto is digging in his heels over proposed ordinances restricting guns in the city. Speaking with reporters yesterday, Peduto said he’s prepared to defend the laws all the way to the U.S. Supreme Court, should the legal battle over them go that far. Gun rights groups have promised to sue the city should leaders pass bills prohibiting certain types of semi-automatic rifles, ammunition and accessories. The ordinances also include a “red flag” law that would allow a judge to remove someone’s firearms if they are deemed a threat to themselves or others.