Thune Reintroduces Bipartisan Legislation to Improve and Maintain Tribal Infrastructure Thune, Sinema Reintroduce Bipartisan Legislation to Improve and Maintain Tribal Infrastructure WASHINGTON — U.S. Sens. John Thune (R-S.D.) and Kyrsten Sinema (D-Ariz.), members of the Senate Committee on Commerce, Science, and Transportation, today reintroduced the Tribal Transportation Equity and Transparency Improvement Act, legislation to increase tribal transportation funding flexibility and improve the transparency and consistency of the Tribal Transportation Program’s administration and data collection practices. “This bill takes several important steps to ensure that South Dakota tribes get their fair share of funding to maintain and improve their transportation infrastructure,”