U.S. House Speaker Nancy Pelosi endorses Joe Biden for president

U.S. House Of Representatives Speaker Nancy Pelosi has endorsed Joe Biden for president, according to a video statement released by her on Monday.

Pelosi's endorsement of the Democratic presidential candidate and former vice president follows that of U.S. Senators Elizabeth Warren and Bernie Sanders, former president Barack Obama and former presidential candidate Al Gore, who all threw their support behind Biden earlier this month.