What was the main conclusion of the Supreme Court's 2008 decision in District of Columbia v. Heller and its 2010 decision in McDonald v. Chicago? Group of answer choices Citizens are allowed to own guns for legitimate purposes, such as protecting the home. Cities and states can ban gun ownership, but the federal government cannot. Governments can ban ownership of guns, except for people who serve in the military or the National Guard. Governments cannot place any restrictions on gun ownership. The Second Amendment applies only to federal law, not state law