temper s boiled over at a house hearing on gun violence. matt gates tried to get the parents of a murdered parkland high school student -- two of them -- removed from the room. lauren fox explains. >> reporter: a congressional hearing on gun violence boiling over after republican congressman matt gates suggested that illegal immigration poses a greater threat to the public than guns. >> i hope we do not forget the pain and anguish and sense of loss felt by those all over the country who have been the victims of violence at the hands of illegal aliens. hr-8 would not have stopped many of the circumstances i raised, but a wall, a barrier on the southern border may have and that's what we are fighting for. [ shouting ]