A Trump administration, with Obama staff members filling in the gaps

In all, Trump has named only 29 of his 660 executive department appointments

Donald J. Trump arrived in Washington the day before his inauguration as the nation’s 45th president in a swirl of cinematic pageantry but facing serious questions about whether his chaotic transition has left critical parts of the government dangerously short-handed.

Mr. Trump will be sworn in at noon Eastern time on Friday, but his team was still scrambling to fill key administration posts when he got here on Thursday, announcing last-minute plans to retain 50 essential State Department and national security officials currently working in the Obama administration to ensure “continuity of government,” according to Sean Spicer, the incoming White