Obama to endorse Biden for 2020 Democratic nomination, source close to Obama says
The endorsement is expected to come in a video to be released later on Tuesday

US Vice President Joe Biden (R) interjects as President Barack Obama delivers remarks at a reception for the 25th anniversary of the White House Initiative on Educational Excellence for Hispanics at the White House in Washington, October 15, 2015. REUTERS/Jonathan Ernst
Former US President Barack Obama will endorse his vice president, Joe Biden, for the 2020 Democratic presidential nomination on Tuesday, according to a person close to Obama.
The endorsement is expected to come in a video to be released later on Tuesday, the person said.
Obama's expected backing would come a day after Biden's last remaining rival, Senator Bernie Sanders, provided his endorsement on Monday.