'Half-measures do not work' — The couple who cared for Aiden McCarthy after his parents were killed in the Highland Park shooting called upon the U.S. government to do more to protect families br br (warning: distressing images) br » Sign up for our newsletter KnowThis to get the biggest stories of the day delivered straight to your inbox: » Subscribe to NowThis: br For more U.S. news, subscribe to NowThis News.