Why the Russia investigation matters and why you should care

From left, National Security Agency Director Adm. Mike Rogers, former FBI Director James Comey, former Director of National Intelligence James Clapper, ex-CIA Director John Brennan, and Defense Intelligence Agency Director Lt. Gen. Vincent Stewart participate in the Senate intelligence committee's hearing on worldwide threats last year.
From left, National Security Agency Director Adm. Mike Rogers, former FBI Director James Comey, former Director of National Intelligence James Clapper, ex-CIA Director John Brennan, and Defense Intelligence Agency Director Lt. Gen. Vincent Stewart participate in the Senate intelligence committee's hearing on worldwide threats last year.