Who was the first Native American to serve in the U.S. Congress from Oklahoma?

Charles Curtis was the first Native American to serve in the U.S. Congress from Oklahoma. He was a member of the Kaw Nation and significantly impacted American politics during his time. Curtis served as a senator from 1907 until 1929 and was later elected as Vice President under Herbert Hoover, making him the highest-ranking Native American in U.S. history at that time. His role in the Senate included addressing issues pertinent to Native American rights and governance, contributing to his prominent status in Oklahoma's history. This makes him a significant figure not just in Oklahoma, but in the broader context of Native American representation in U.S. politics.