Get the United States congress to tighten gun control laws. The president was announcing what he would do by executive action without congress when the memories of these victims, 20 first graders from newtown, connecticut, six or seven years old, choked mr. Obama in midsentence. Every time i think about those kids, it gets me mad. And, by the way, it happens on the streets of chicago every day. Pelley there have been 13 mass killings during the obama presidency. And republicans voted against gun legislation. Last month, after san bernardino, mr. Obama decided to act on his own. Given the limits of his power, his actions today are not sweeping. The most significant simply expands background checks for gun sales online or at gun shows. Currently, about 40 of sales have no background checks at all. Chief Legal Correspondent jan crawford is at the white house. And from every family who who never imagined that their loved one would be taken from our lives by a bullet from a gun. Reporter it