Kelsi Brown Corkran, former head of the U.S. Supreme Court practice at Orrick, Herrington & Sutcliffe, has joined the Georgetown University Law Center’s Institute for Constitutional Advocacy and Protection as a pro bono senior fellow.

Corkran, who was a law clerk to the late Justice Ruth Bader Ginsburg in the 2013 term, took on a leadership role in Orrick’s Supreme Court and appellate practice in May. She has argued two Supreme Court cases, most recently Torres v. Madrid. The Fourth Amendment case, argued in October, asked whether a “seizure” under the law required police to exert physical force in detaining a suspect. The case is awaiting a decision.