of Duckworth's children were conceived by IVF. The Center for Effective Lawmaking, a joint initiative of the University of Virginia and Vanderbilt University, ranked Duckworth the fifth most effective Democratic senator in the 116th Congress and the most effective Democratic senator on transportation policy. Professors Craig Volden and Alan Wiseman, co-directors of the Center for Effective Lawmaking, stated, "While still in her first term, Senator Tammy Duckworth has risen to the top five among effective Democratic lawmakers in the Senate. She sponsored 77 bills in the 116th Congress, with four of them passing the Republican-controlled Senate and two becoming law." Duckworth was participating in the certification of the 2021 United States Electoral College vote count when Trump supporters stormed the U.S. Capitol. In the wake of the attack, Duckworth called Trump "a threat to our nation" and called for his immediate removal from office through the invocation of the Twenty-fifth Amendment to the United States Constitution or impeachment. Two days later, on January 8, she also called for the resignation of Representative Mary Miller, who had quoted Adolf Hitler during a speech on January 5. In June 2022, President Biden sent Duckworth to Taiwan, where she held a press conference with Tsai Ing-wen to announce the U.S.-Taiwan Initiative on 21st-Century Trade in the wake of fears of angering China by the other partners to the May 2022 Indo-Pacific trade agreement. Duckworth's mission was planned in conjunction with the U.S. Trade Representative's office, which leads the Initiative for Washington. Duckworth is the sponsor of S. 3635, the Public Safety Officer Support Act of 2022, which would provide line of duty death designation to law enforcement and other public safety officers who die as a result of traumatic brain injury, PTSD, and other "silent" injuries. The bill is based on the death of Washington, D.C. police officer Jeffrey Smith in the aftermath of the January 6, 2021, Capitol attack. Smith died of post-concussive syndrome after suffering repeated attacks at the Capitol. Committee assignments Current Committee on Armed Services (2019–present) Subcommittee on Airland (Chair) Subcommittee on Readiness and Management Support Subcommittee on Strategic Forces Committee on Commerce, Science, and Transportation Subcommittee on Aviation Operations, Safety, and Security Subcommittee on Communications, Technology, Innovation, and the Internet Subcommittee on Consumer Protection, Product Safety, Insurance and Data Security Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety, and Security Committee on Environment and Public Works Subcommittee