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Live stream: Biden introduces foreign policy and national security nominees

FILE - In this Nov. 19, 2020, file photo President-elect Joe Biden speaks at The Queen theater in Wilmington, Del. (AP Photo/Andrew Harnik, File)
FILE - In this Nov. 19, 2020, file photo President-elect Joe Biden speaks at The Queen theater in Wilmington, Del. (AP Photo/Andrew Harnik, File) (File)

Watch live coverage as President-elect Joe Biden delivers remarks and introduces key foreign policy and national security nominees and appointments.

Watch live at 1 p.m. Tuesday:

Pennsylvania certifies Biden as winner of presidential vote (AP)

Democrat Joe Biden has been certified as the winner of the presidential election in Pennsylvania, culminating three weeks of vote counting and a string of failed legal challenges by President Donald Trump, state officials said Tuesday.

The Pennsylvania State Department “certified the results of the November 3 election in Pennsylvania for president and vice president of the United States,” Gov. Tom Wolf, a Democrat, tweeted.

“As required by federal law, I’ve signed the Certificate of Ascertainment for the slate of electors for Joe Biden and Kamala Harris,” Wolf wrote.

The State Department said Wolf’s “certificate of ascertainment” has been sent to the national archivist in Washington. Pennsylvania’s electors, a mix of elected Democrats, party activists and other staunch Biden backers, will meet in the state Capitol on Dec. 14.

The results show Biden and Harris with 3.46 million votes, Trump and Vice President Mike Pence with 3.38 million, and Libertarian Jo Jorgensen with 79,000.

Read more here.