NASF recognized a long-standing partnership with The Arbor Day Foundation this week with the renewal of a Memorandum of Understanding in support of the Tree City USA^® program. Sponsored by the Arbor Day Foundation in cooperation with NASF and the USDA Forest Service, Tree City USA provides direction, technical assistance, public attention, and national recognition for urban and community forestry programs in thousands of towns and cities. The MoU is renewed every five years.