[153][154] In January 2007, Obama and Senator Feingold introduced a corporate jet provision to the Honest Leadership and Open Government Act, which was signed into law in September 2007.[155][156]
Later in 2007, Obama sponsored an amendment to the Defense Authorization Act to add safeguards for personality-disorder military discharges.[157] This amendment passed the full Senate in the spring of 2008.[158] He sponsored the Iran Sanctions Enabling Act supporting divestment of state pension funds from Iran's oil and gas industry, which was never enacted but later incorporated in the Comprehensive Iran Sanctions, Accountability, and Divestment Act of 2010;[159] and co-sponsored legislation to reduce risks of nuclear terrorism.[160] Obama also sponsored a Senate amendment to the State Children's Health Insurance Program, providing one year of job protection for family members caring for soldiers with combat-related injuries.[161]
Obama held assignments on the Senate Committees for Foreign Relations, Environment and Public Works and Veterans' Affairs through December 2006.[162] In January 2007, he left the Environment and Public Works committee and took additional assignments with Health, Education, Labor and Pensions and Homeland Security and Governmental Affairs.[163] He also became Chairman of the Senate's subcommittee on European Affairs.