Senator Kamala Harris (D-Calif.) once again made history by becoming the first Black woman to sit on a presidential ticket, when former Vice President and current Democratic presidential nominee Joe Biden announced her as his running mate last night (August 11) via Twitter.

Calling Harris “a fearless fighter for the little guy, and one of the country’s finest public servants,” Biden also tweeted about Harris’ stint as California’s attorney general: “I watched as they took on the big banks, lifted up working people and protected women and kids from abuse.”

In one of her responses, Harris tweeted her recognition of this moment, where, by her sheer existence she represents intersecting populations that have long been ignored and marginalized: women, people of color and children of Black and brown immigrants. “Black women and women of color have long been underrepresented in elected office and in November we have an opportunity to change that,” she tweeted.

Harris’ bio is one of a budding political legend. In addition to being the eldest daughter of two immigrant parents (her father is from Jamaica and her mother is from India), she was raised by a single mom in Oakland; graduated from an HBCU, Howard University; was the first Black person and the first woman elected as California’s attorney general in 2011; and, in 2017, became the second Black woman and first South Asian-American to join the senate in U.S. history. Of course, she was the only Black woman to run for this year’s top political seat, in a crowded Democratic primary that at one time had more than 20 people vying for votes.

Once the news broke, after much speculation, politicians and pundits took to social media to congratulate Harris on the historic achievement, including former president Barack Obama, who knows all about breaking boundaries: