Are you still having trouble? He was elected to the U.S. Senate by the Kansas Legislature in 1906 (before Senators were elected directly) and then by popular vote one 6-year term from 1907-1913, and then most of 3 terms from 1915-1929 when he resigned to serve as Vice President to Herbert Hoover.
Surprisingly, many Americans today would be unable to identify this man, despite his successful political career. Until President Biden chose Kamala Harris, he was the first & only Indian American Vice President. Although he is a man of many achievements, few Americans know much about him. During the celebrations of Vice-President Harris' election, I actually heard newspersons describing her as the first Native American Vice President. No, that would be our own Kansan, Charles Curtis!
Not only is he little known Nationally, even many Kansans know little about him, and that is a shame, for he had a rich life. From his mother he was 3/8th Native American--Kaw, Osage, and Potawatomi. His mother died when he was three years old, and from her he had learned to speak French and Kanza. After her death, his father married briefly but then joined the Union Army and was captured and imprisoned.
The influence of both sets of Native American Ancestors played a role in his development, both encouraging him not to remain on the reservation but rather to attend school in Topeka. He studied for and was admitted to the bar in 1881 and served as Shawnee County Prosecuting Attorney in 1885.
Recognizing that the importance of this Native American Kansas Office Holder had been neglected, when Bob Dole became Senate Majority Leader he remembered his fellow Senate House Majority Leader by hanging a portrait of Curtis in his office. In a speech in honor of the occasion, Senator Dole said, "Since he (Curtis) was the last majority leader from the state of Kansas, we thought it would be appropriate to hang his portrait in my office." Adding, "I was elected majority leader on 60 years to the day after Charles Curtis got the job." The artist of the 48" by 36" painting was identified as Elie Cristo Loveman, and the painting had been borrowed by Sen. Dole from the Kansas Historical Society, who had been given the painting by the estate of Curtis' sister.