I was researching whether or not a tribal recognition had been reversed when I came upon the case of the Schaghticoke Tribal Nation in Connecticut. I found Bill H.R. 1104 which, " repeal[s] the Federal acknowledgment of the Schaghticoke Tribal Nation."
The bill contains research and information that was created by the Bureau of Indian Affairs which, disputes the decisions to recognize the tribe that they themselves made; it also contains the subsequent research that led to the Bill's reversal because as representative Nancy Johnson stated, "its [an] erroneous and unlawful decision to acknowledge the Schaghticoke Tribal Nation of Kent. Simply put, it was made by ignoring evidence, manipulating federal regulations and overturning precedent."
The document from where I took Nancy Johnson's quote is an appeal to the U.S. Senate Committee on Indian Affairs to revise the recognition process in order to make it "fair". An example she uses is the Schaghticoke case where she further states that, "a strategy was outlined for BIA officials to overturn existing agency precedent and ignore federal regulations in order to find in the Schaghticoke’s favor."
She also writes, "the BIA used an unprecedented methodology and made material mathematical errors is calculating tribal marriage rates. Without these mistakes, the Schaghticoke petition would not have satisfied key criteria and would not have been recognized."
Bill H.R. 1104
Nancy Johnson before the U.S. Senate Committee on Indian Affairs