The NSA get to spy them. Oh wait, they already do that. They can tell other agencies what they know.
Thank God for the Patriot Act.
With 5 Eyes, President Trump can ask his Friend Boris to have MI5/6 spy on these assholes and get back to Trump’s people. More than likely, that has been done and info is back at NSA and Barr has it. Which is why he declared Antifa to be a terrorist group.