Phi Alpha Delta Law Fraternity, International (ΦΑΔ or P.A.D.) is the largest professional law fraternity in the United States. Founded in 1902, P.A.D. has since grown to 717 established pre-law, law, and alumni chapters and over 330,000 initiated members. Application for membership to Phi Alpha Delta is available to undergraduate students, law school students, lawyers, judges, and politicians.