CHICAGO — Chicago officials will be watching the U.S. Supreme Court on Thursday as the justices issue their ruling on a Second Amendment challenge to the gun ban in Washington, D.C. As CBS 2's Joanie Lum reports, the decision Thursday could yield the first concrete definition of the meaning of the Second Amendment in the Supreme Court's 216 years. The decision Thursday could have effects across the country, including in Chicago, where a ban on the sale and... (GunPolicy.org)