Pi Sigma Alpha, the National Political Science Honor Society, is the only honor society for students of government in the United States. On Feb. 8, 2006, PLNU commemorated its acceptance as the 622nd chapter.

The purpose of Pi Sigma Alpha is to stimulate productive scholarship and intelligent interest in the subject of government, public affairs and service, political philosophy and issues in public policy. The organization accomplishes these goals by hosting conferences with nationally renowned speakers, submitting papers for review and publication and sponsoring monthly colloquia to discuss academic issues of political science.

Admittance into this honor society is based upon a student's grade point average, produced scholarship, and commitment to fulfilling their potential within the field of political science. Past members of Pi Sigma Alpha have gone on to become top elected officials and cabinet level positions in the national government, the foreign and civil services, senior advisors to the Senate and Congress, founders of non-governmental organizations and the most esteemed thinkers in their field.