The statement that best assesses the contributions of the Code of Hammurabi to U.S. political thought is:
"The Code of Hammurabi contributed to U.S. political thought as an example of how uniform written rules could promote a flourishing society."
This reflects the historical significance of the Code as one of the earliest written legal codes, which established the principle of law being codified and accessible, influencing later legal frameworks, including those in the U.S.