Why the FBI went public with its objection to the Nunes memo release | PBS NewsHour

Why the FBI went public with its objection to the Nunes memo release | PBS NewsHour: Conservative Republicans have been urging President Trump to release the classified House Intelligence Committee memo, believing it would discredit the FBI and the Russia investigation. But the FBI has issued a statement saying the agency has "grave concerns and material omissions of fact" in the memo. John Yang learns more from Devlin Barrett of The Washington Post.