When I walked into the Old Executive Office Building at the White House complex to meet my new staff at my NSC office on January 21, 2009, every single one of my team had worked for Bush the previous day. & we all got to work to advance AMERICAN national interests. THREAD 1/

That's why the #HatchAct is important. And that's why the appearance of General Kellogg tonight and Pompeo last night violated not just laws, but virtuous norms of isolating nationals security from partisan politics. 2/

The overwhelming majority of those that work at the State Department and NSC are non-partisan professionals, not political appointees. When their bosses show up at a Party convention, their common quest to defense AMERICAN national interests is undermined. 3/ END THREAD.