Senator Kamala Harris was once a 2020 Democratic presidential candidate.
The Senator from California is a former prosecutor, and a vocal critic of President Donald Trump.
Now, Reuters reports Harris is endorsing her one-time rival, former Vice President Joe Biden.
Harris made the announcement Sunday, via a recorded message on Twitter.
I have decided that I am, with great enthusiasm, going to endorse Joe Biden for president of the United States.
Kamala Harris (D-CA)