Statement by the President on Cabinet Nominee Confirmations
Reporting cited here
- documented
Following Kelly's Senate confirmation on January 20, 2017, Trump publicly welcomed him into the administration as a cabinet official responsible for securing the border.
Kelly joins Trump's cabinet as homeland security secretary · Former homeland security secretary
- documented
After Donald Trump selected James Mattis for secretary of defense, Mattis began serving on January 20, 2017.
Mattis becomes Trump's first defense secretary · Served as defense secretary from January 2017 through December 2018