2024 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2023 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2022 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2021 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2020 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2018 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2017 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2015 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2014 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators

2013 2 USC 6316 – United States Code Annotated or United States Code Service; procurement for Senators