Pretty hard to get anything done when he fires everyone he hires.
For those who seem to care about such things, the shortest-lasting White House chief of staff was Pete Rouse, who lasted from the beginning of the 2010 baseball postseason to the near-beginning of 2011 spring training for Barack Obama. (OK, that's a slight joke.) Actually, he served 104 days. James Baker didn't last that much longer as George H.W. Bush's chief of staff--150 days, up to and including the day Bush's presidency ended. And the third-shortest tenure? Rinse Platypus with Donaldus Minimus. (150 days.)
The ascending time-served list from there goes as follows, with the presidents in question in parentheses and the number of days to follow; the Chris Bermanisms (what the hey, we got to have
some fun!) are mine:
Kenneth Duberstein (Ronald Reagan)--203
Jack (Elementary, My Dear) Watson (Jimmy Carter)--223
Samuel (Mule) Skinner (George H.W. Bush)--251
James R. Jones (Lyndon B. Johnson)--269
Hamilton (Beach) Jordan (Jimmy Carter)--329
Jack Lew (Barack Obama)--359
Bill Daley (Barack Obama)--379
Donald (Yo Ho Ho and a Bottle of) Rumsfeld (George W. Bush)--425
Dick Cheney (Gerald Ford)--427
Howard (The Butcher, the) Baker (Ronald Reagan)--490
John F. Kelly (Donald Trump)--495
Alexander Haig (& Haig Scotch) (Richard Nixon, Gerald Ford)--505
Mack (the Knife) McLarty (Bill Clinton)--543
Rahm Emanuel (Barack Obama)--619
Erskine (Finger) Bowles (Bill Clinton)--638
Donald Regan (Ronald Reagan)--753
John Podesta (Bill Clinton)--823
Wilton (Missing) Persons (Dwight Eisenhower)--836
Leon Panetta (Bill Clinton)--918
Joshua (Nuts and) Bolten (George W. Bush)--1,012
Kenneth O'Donnell (John F. Kennedy)--1,036
John (Here Comes the) Sununu (George H.W. Bush)--1,060
Marvin (Kilo) Watson (Lyndon B. Johnson)--1,180
Denis (the Menace) McDonough (Barack Obama)--1,461
James Baker (Ronald Reagan)--1,476
H.R. Haldeman (Richard Nixon)--1,561
Andrew (Hallmark) Card (George W. Bush)--1,910
Sherman (Tank) Adams (Dwight Eisenhower)--2,086
John (U.S.) Steelman (Harry S. Truman)--2,231
Incidentally, if you're keeping score at home, the foregoing indicates that Obama leads the league with having had five White House chiefs of staff. Clinton is tied with Reagan for a close second with four. G.H.W.B. pulls right up behind with three, in a dead heat with Nixon, Ford, and the Right Reverend Dr. Jimmy Sol Hargis. President Tweety (so far) is tied with G.W.B., L.B.J. and Ike for two. J.F.K. had but one.
I thought John Kelly was a good man in a not-so-great position, myself. It must have been more than painful for him to deal with the president's continuing apparent disparagement of a Cabinet secretary he's considered a close confidante, Homeland Security secretary Kirstjen Nielsen.
On the other hand, based on this photograph, Kelly gives you an idea of how
NCIS star Mark Harmon would look if Harmon should lose his hair . . .