He then attended the George Washington University Law School in Washington, D.C. Both his grandfather, Foster, and his uncle, Robert Lansing, the husband of Eleanor Foster, had held the position of Secretary of State.
Ia kemudian berkuliah di George Washington University Law School di Washington, D.C. Baik Foster kakeknya maupun Robert Lansing pamannya, suami dari Eleanor Foster, pernah menjabat sebagai Menteri Luar Negeri Amerika Serikat.