FARGO, N.D. (AP) — It’s been two years since the University of North Dakota unveiled its new Fighting Hawks logo that put it in good standing with the NCAA, but a familiar cheer at its hockey games shows what many students and alumni still think of the switch: “Let’s go Sioux!”

Administrators knew it would be a tough sell getting fans to let go of the Fighting Sioux nickname deemed offensive by the NCAA and a local American Indian tribe. But emails between the university’s president and one of its biggest benefactors show just how difficult it continues to be.

The emails between school president Mark Kennedy and Engelstad Family Foundation trustee Kris Engelstad McGarry, whose late father donated money for a $110 million hockey arena, reveal Kennedy’s frustration over the foundation’s resistance to a plan to feature the green and white Fighting Hawks logo at center court in the Betty Engelstad Sioux Center, where UND’s basketball and volleyball teams play.