With more than 2 million members, the "Divine Nine" organizations have launched many get-out-the-vote initiatives in this historic election involving one of their members, Vice President Harris.

President Biden met with plaintiffs from the Brown v. Board of Education case Thursday. On Friday, he's meeting with members of historically Black sororities and fraternities.

Lawrence C. Ross, author of The Divine Nine, explains why Black sororities showed up and showed out for Kamala Harris—and how Black Greek organizations have long pushed for enfranchisement.