The President whose cabinet James Mattis served on assumed office on what date?
Cabinet of Donald Trump This article lists the members of President Donald Trump's Cabinet. Trump assumed office on January 20, 2017.
Presidency of John Quincy Adams The presidency of John Quincy Adams began on March 4, 1825, when John Quincy Adams was inaugurated as President of the United States, and ended on March 4, 1829. Adams, the sixth United States president, took office following the 1824 presidential election, in which he and three other Democratic-Republicans—Henry Clay, William H. Crawford, and Andrew Jackson—sought the presidency. No candidate won a majority of Electoral College votes, and so the United States House of Representatives chose the president in a contingent election. With the help of Clay, Adams was elected by the House, and Clay became Adams's Secretary of State.