Washington (CNN) Remember back in 2016 when then-candidate Donald Trump pledged that "I'm going to surround myself only with the best and most serious people?"

Who knew there would be so many!

And it's not just at the Cabinet level! According to Kathryn Dunn Tenpas at Brookings , a DC-based think tank, 66% of all senior-level staffers who came into jobs when Trump became President are now gone. That's nearly equal to the 71% attrition for Obama's entire first term -- and eclipses Bush's 63% rate.

Trump, for his part, insists that his administration remains the hottest club in DC

Read More