(Reuters) – The U.S. Supreme Court ruled on Thursday for the first time that the U.S. Constitution’s Second Amendment secures an individual’s right to carry weapons in public for self-defense. WHAT DOES IT CHANGE? The ruling struck down New York’s gun licensing laws and similar laws in California, Hawaii, Maryland, Massachusetts, New Jersey and the District of Columbia denying concealed-carry gun permits to residents wanting a gun for self-defense unless they could prove they had “proper cause.” The ruling makes it much more difficult for U.S. lawmakers to regulate guns and other weapons in a …