of the NCF, Jenks helped to draft a bill to amend the Sherman Anti-Trust Act in 1908. Although the bill was ultimately unsuccessful, Jenks sat on the four-man committee headed by John Bates Clark which drafted a preliminary version of the 1914 Clayton Anti-trust Act. With the Immigration Commission, he wrote model legislation for the Mann Act of 1910, which focused on the restriction of white slavery and sex trafficking into the United States. Jenks was instrumental in the writing and the passage of the Dillingham Immigration Bill of 1911, which was ultimately vetoed by President William Howard Taft. However, this bill was one of the first to restrict immigration on racial grounds, and set the precedent for many restrictionist policies which were soon to be passed by the federal government, such as The National Origins Act of 1924. In 1916, Jenks was also included on a committee led by Sidney Gulick, which sought to end the disproportionate discrimination in the immigration of citizens of Asian countries, and proposed a new model for immigration restrictions. In reality, their proposed plan still instituted quotas for different immigrants based on race, it would just be less exclusionary for members of Asian countries. Throughout his years involved in immigration policy, Jenks gave talks and held conferences on what he termed the racial problem of immigration. The Dillingham Immigration Commission Jenks’ most influential and lasting work for the Federal Government came from his membership in the Dillingham Immigration Commission from 1907-1911. The Commission was progressive minded, and was headed by senator William Dillingham, although most of the power rested with Henry Cabot Lodge and Jeremiah Jenks. The commission was convened after the failure of the implementation of a literacy test by congress to limit immigration, and sought to conduct academic research to influence policy on the restriction of immigration. The commission was also formed out of a growing negative sentiment towards immigrants, as a majority of the population growth in the US in this period was result of immigration, and immigrants were increasingly coming from countries in Southern and Eastern Europe. Jenks was instrumental to the work, as he did much of the hiring for the commission and led many of the research projects that the commission undertook. He applied his experiences abroad in different colonies across the world, as he increasingly thought it was the duty of the federal government to place restrictions