Biden warns of Trump officials' 'roadblocks' to transition
President-elect Joe Biden leaves after speaking at The Queen theater, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

President-elect Joe Biden leaves after speaking at The Queen theater, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

Dec. 28, 2020 03:52 PM EST
President-elect Joe Biden speaks at The Queen theater, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

President-elect Joe Biden speaks at The Queen theater, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

Dec. 28, 2020 03:48 PM EST
President-elect Joe Biden speaks during a virtual meeting with members of his national security and foreign policy agency review teams at The Queen theater, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

President-elect Joe Biden speaks during a virtual meeting with members of his national security and foreign policy agency review teams at The Queen theater, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

Dec. 28, 2020 02:14 PM EST
President-elect Joe Biden waves as he leaves The Queen theater after speaking Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

President-elect Joe Biden waves as he leaves The Queen theater after speaking Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

Dec. 28, 2020 03:54 PM EST
President-elect Joe Biden arrives to speak at The Queen theater, followed by Vice President-elect Kamala Harris, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

President-elect Joe Biden arrives to speak at The Queen theater, followed by Vice President-elect Kamala Harris, Monday, Dec. 28, 2020, in Wilmington, Del. (AP Photo/Andrew Harnik)

Dec. 28, 2020 03:50 PM EST