Former President Barack Obama has also endorsed Vice President Harris.
Vice President Kamala Harris wrapped up what has been a whirlwind week in the presidential race with her campaign saying Sunday it has raised more than $200 million in less than a week.
On Thursday night, Harris met with Israeli Prime Minister Benjamin Netanyahu and took the lead in addressing the public about their discussions.
Harris has secured commitments from enough delegates to become the presumptive nominee if they all honor their commitment when voting, according to ABC News reporting.
Former House Speaker Nancy Pelosi released a statement after the speech saying the president "is not only on the right side of history, but on the right side of the future."
"With love and gratitude, I salute President Biden for always believing in the possibilities of America and giving people the opportunity to reach their fulfillment," she said.
-ABC News' Lauren Peller
Democratic National Committee Chair Jaime Harrison thanked Biden for his service in a statement posted on X.
You have always put this country ahead of yourself! We owe you an enormous debt of gratitude!" he said.
Shortly after the president delivered his remarks, massive applause and cheers were overheard pouring out of the White House, where hundreds of staff had gathered to watch their beloved boss deliver his historic address.
Biden sounded as if he were using a microphone to address his staff, starting with “Hello, hello, hello!” and being met with roaring applause.
At one point, it sounded as if the crowd broke into a chant of "Biden! Biden! Biden!"
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-ABC News' Molly Nagle and Mary Bruce
Pennsylvania Gov. Josh Shapiro, who sources tell ABC News is one of the front-runners for the vice president spot, posted a statement on X following Biden's speech.
"A patriot, a President who has gotten historic stuff done, and a fighter for our country," he said. before thanking him for his service
