Alejandro Mayorkas, seen here at his introduction by then-President-elect Biden, has been confirmed to lead the Department of Homeland Security.

WILMINGTON, DE – NOVEMBER 24:  Secretary of Homeland Security nominee Alejandro Mayorkas removes his face mask to speak after being introduced by President-elect Joe Biden as he introduces key foreign policy and national security nominees and appointments at the Queen Theatre on November 24, 2020 in Wilmington, Delaware. As President-elect Biden waits to receive official national security briefings, he is announcing the names of top members of his national security team to the public. Calls continue for President Trump to concede the election as the transition proceeds. (Photo by Mark Makela/Getty Images)