.@RepMarkMeadows will be Pres Trump's 4th WH Chief of Staff since taking office. The key post has previously been filled by Reince Priebus, John Kelly, and Mick Mulvaney. Chiefs of Staff for recent presidents:
— Mark Knoller (@markknoller) March 7, 2020
Obama - 5 in 8 years
GW Bush - 2 in 8 years
Clinton - 4 in 8 years