The Supreme Court has ruled to limit the ability of states and cities to restrict gun-ownership rights. Gwen Ifill gets two different points of view on what the decision means for law enforcement and for other existing gun regulations.

The U.S. Supreme Court set the stage for a major ruling on the Second Amendment Tuesday when it agreed to take a case weighing the constitutionality of a ban on handguns in Washington, D.C. Marcia Coyle of the National Law…