He has exposed American agents, including our spies and military personnel, to danger across the world by publishing CIA outpost locations, their identities, the description and amount of our military equipment in certain countries, etc, and all where people like ISIS could read it. This included leaking our CIA's strongest tools for maintaining digital dominance in the cybersecurity fear. That's your security the Chinese, Russians, and Iranians are ravaging, now.
He prints the secrets to our weapons every time they've gotten their hands on sensitive blueprints. That's your tax money he's handing to your enemies and your friends alike. That's your R&D.
He electioneers for Trump on the behalf of Putin by pronouncing that "huge leaks" are coming out about Hillary, after the Podesta dump, but never delivers. He did that several times, IIRC. He was trickling this stuff at the most politically sensitive times for Trump, too, when he would be bleeding in the polls. He actively participated in a deliberate attempt to manipulate our elections, and not because he thought Trump was a good guy, or was anti-establishment. He just wants to hurt the USA every chance that he gets. This is the assessment of your own intelligence community acting under and publishing by consent of department heads selected by Trump.
This is simply one of the best sources of news in existence right now:
https://theintercept.com/2018/07/21...-and-hand-him-over-to-the-uk-what-comes-next/