Who is eligible to join Alliant? Last Modified Monday July 06, 2015 You are eligible to join Alliant if you: Are a current or retired employee from one the many businesses and organizations Alliant partners with in the U.S. Check to see if your employer is part of Alliant Are an immediate family member or a domestic partner of a current Alliant member Have donated to Foster Care to Success. Foster Care to Success is the leading not-for-profit helping foster teens successfully transition to adulthood. A nominal donation of $10 makes you eligible for Alliant membership. Donate today! Live or work in one of the communities near our Corporate Headquarters in Chicago. Check here to see if you qualify.