Realistically speaking: The NSA hasn't been filtering shit since 2003 at least. And let's break down those sixteen agencies:

Air Force Intelligence - Has no domestic charter, has no domestic interest

Army Intelligence - Has no domestic charter, has no domestic interest

Central Intelligence Agency - already had it, since 2003 (or 1947 in most cases)

Coast Guard Intelligence - be serious.

Defense Intelligence Agency - Has no domestic charter, already had everything the NSA had

Department of Energy - exactly the people you'd like to have unfiltered access to NSA data

Department of Homeland Security - already the umbrella organization of the NSA, still hasn't rolled back the porno scanners

Department of State - Can't do shit without any of the other three letter agencies on the ground

Department of the Treasury - Secret Service, busts counterfeiters

Drug Enforcement Administration - already had it (DEA is a pseudo soft power wing of the CIA, just ask Pablo Escobar or Manuel Noriega)

Federal Bureau of Investigation - already had it, still couldn't stop the Tsarnievs even when the FSB said "these guys have been hanging out at Chechen terrorist training camps", couldn't stop Esteban Santiago even when he walked into the VA hospital saying "I hear voices and want to do violence"

Marine Corps Intelligence - Has no domestic charter, has no domestic interest

National Geospatial-Intelligence Agency - literally, map makers

National Reconnaissance Office - literally, instrument supervisors

National Security Agency - the agency in question

Navy Intelligence - has no domestic charter, has no domestic interest

So really, this comes down to "now the FBI and DEA can rifle through NSA data without the NSA approving it first." But the FBI and DEA have been doing it already for years. So really, this is an article saying "you know those parallel construction prosecutions you knew would never happen? Yeah, they're never going to happen."