Daily Mail is reporting 3 administration members quit on the heels of Nielsen and Alles:
https://www.dailymail.co.uk/news/article-6900151/Trump-fires-Secret-Service-director-amid-Homeland-Security-bloodbath-ousted-Nielsen.html
"U.S. Citizenship and Immigration Services Director Lee Cissna is also leaving, according to CBS News. So are DHS undersecretary for management Claire Grady and general counsel John Mitnick."
Claire Grady, per Newsweek, was by law the next in line to take Nielsen's place.
Anon here is curious about just who Cissna, Grady and Mitnick are. Were they Obama holdovers? Time for a dig.
Lee Cissna
Son of a father who immigrated from Peru, and a mother who immigrated from Palestine
B.S. in physics from MIT
M.A. in international affairs from Columbia
J.D. from Georgetown
Prior to this administration, was immigration lawyer at Kaufman & Canoles in Richmond, VA.
Sauce: https://en.wikipedia.org/wiki/Lee_Cissna
Claire Grady:
B.S. Trinity University (Texas)
M.B.A. Univ. of Maryland College Park
M.S. National Defense University
https://www.newsweek.com/donald-trump-claire-grady-kevin-mcaleenan-kirstjen-nielsen-immigration-dhs-1388558
https://heavy.com/news/2018/11/claire-grady/
"Grady has been working as under secretary since August 2017. She has also become acting deputy secretary at DHS, taking over the responsibilities of the vacant position. Before that, she worked in procurement and acquisition at the Department of Defense, as well as other positions at the DHS.
She is reportedly not willing to make life easy for the president. According to anonymous colleagues quoted by the Times, Grady said she had no intention of stepping aside to clear a path for McAleenan to take over Nielsen’s job. As such, the president could be forced to push Grady out.
If Trump manages to install McAleenan, the 47-year-old will be tasked with implementing a tougher approach to border security, something Trump reportedly believed Nielsen was unable or unwilling to do. CBS News reported that Nielsen's Sunday meeting with the president was widely expected to mark the end of her DHS tenure, during which time she faced regular criticism from Trump over a perceived lack of action on immigration."
John Marshall Mitnick
B.A. Emory University
J.D. Univ of Virginia
Oxford University (Rhodes Scholar?)
Prior to Trump administration, he had been general counsel at the Heritage Foundation, and before that, general counsel and V.P. at Raytheon.
Of note, Mitnick was also in George W. Bush's administration, first as Deputy Counsel at Homeland Security and then as Associate Counsel to the President.
Wife Carol Deane is a rheumatologist at Georgetown University Hospital.
Sauces:
https://en.wikipedia.org/wiki/John_Mitnick
https://www.law.virginia.edu/static/uvalawyer/html/alumni/uvalawyer/f12/80s.htm