of course it is, stupid. it is not to just investigate. if it was just an investigative agency why do they carry guns and get training in martial arts and gun proficiency? how many people investigating a crime are facing danger, stupid? who needs a gun to ask questions after the crime is investigated? cops who see a broken window or an open door in a business after hours go in with their guns drawn, TO INVESTIGATE OR TO STOP A CRIME? are you insane? good god, ass. the supreme court does not mandate policy or everyday functions of every person or agency in this country, that is what that decision meant, you clown. it is their duty to protect citizens. period. not a constitutional mandate!! it is the duty of soldiers to follow lawful orders, but it is not a constitutional mandate. you are so [Unwelcome language removed] stupid it hurts to read your shit.