Since President Barack Obama recently said he would "think about changing" the name if he owned the team, many fans have taken up the cause. And many more have rallied around a name they see as a tradition or a tribute.
Halbritter sees it as offensive and demeaning.
In a letter to Goodell, he said the Change the Mascot campaign sought to "finally halt the destruct effects of the R-word on our people and Native peoples everywhere. Additionally, as financial sponsors of the league, we are concerned that the league's marketing of a racially derogatory term undermines the NFL's ability to be a unifying force in America."
NFL spokesman Brian McCarthy said the Oneida Indian Nation is not a league sponsor. The Oneida Indian Nation sponsors the Bills and the Wisconsin tribe of the Oneida nation does have a sponsorship deal with the Packers.
The Oneida Indian Nation, which has approximately 1,000 enrolled members, is one of 566 federally recognized sovereign Native American nations, according to the U.S. Department of the Interior/Indian Affairs.
AP reporter Michael Hill contributed to this report.
AP NFL website: www.pro32.ap.org