Last Wednesday, in order to comply with court rulings against the city and state of Illinois and to keep it in line with Illinois concealed carry law, Chicago’s city council voted to end a 45-year-old requirement that gun owners must register their weapons and carry a Chicago firearm permit.

While Chicago Mayor Rahm Emanuel disagreed with the council’s decision, a story from Reuters says pressure from groups like the National Rifle Association, and legal cases (including one heard before the U.S. Supreme Court) are changing the way the state adheres to the Second Amendment.

In December 2012, an appeals court declared Illinois’ concealed carry ban unconstitutional and gave the state six months to create a law that allowed residents to carry firearms in public. The state approved a concealed carry law this past July.

The decision by Chicago’s city council came the day after voters in Colorado ousted two lawmakers that supported stricter gun control.