(Library of Congress via The New York Times) A photo provided by the Library of Congress shows President Calvin Coolidge with a Native delegation, possibly from the Plateau area in the Northwestern United States, near the South Lawn of the White House in 1925, the year after the passage of the Snyder Act, which extended U.S. citizenship to all Native people. The 19th Amendment did not bring the right to vote to all Native women, but two experts in a conversation said it did usher in the possibility of change.