From 1778 to 1871, the United States government entered into more than 500 treaties with the Native American tribes; all of these treaties have since been violated in some way or outright broken by the US government,[22][23][24][25] while at least one treaty was violated or broken by Native American tribes.[26] However, violations by one party do not nullify the treaties under US law; the treaties still have legal effect today, and Native Americans and First Nations peoples are still fighting for their treaty rights in federal courts and at the United Nations.[23][27]

https://en.wikipedia.org/wiki/List_of_United_States_treaties