healthy late-term fetuses in cases where two doctors certified that carrying the fetus to term would cause the woman "substantial and irreversible impairment of a major bodily function." His practice frequently made him the focus of anti-abortion groups. The Kansas Coalition for Life kept a daily vigil outside Tiller's facility from May 9, 2004, until May 31, 2009. The group known as Operation Rescue held an event called "The Summer of Mercy" in July and August 1991, focusing on Tiller's clinic but also protesting other abortion providers in Wichita, Kansas. Years later, a branch that split from the main Operation Rescue group moved from California to Kansas specifically to focus on Tiller, initially named Operation Rescue West. In 2007, Kansas prosecutors charged Tiller with 19 misdemeanors for allegedly consulting a physician who was financially affiliated with him in late-term abortion cases in 2003. Kansas law prohibits abortions after the beginning of fetal viability unless two doctors certify that continuing the pregnancy would cause the woman "substantial and irreversible impairment of a major bodily function", with the requirement that the two consulting doctors must not be "financially affiliated" with the doctor performing the abortion. The case became a cause célèbre for both supporters and opponents of legal abortion. WorldNetDaily columnist Jack Cashill compared the trial to the Nuremberg Trials of Nazi war criminals, while Icahn School of Medicine at Mount Sinai Professor Jacob Appel described Tiller as "a genuine hero who ranks alongside Susan B. Anthony and Martin Luther King Jr. in the pantheon of defenders of human liberty." The trial took place in March 2009, with the jury finding Tiller not guilty on all charges on March 27, approximately two months before his death. At the time of his death, Tiller was board certified with the American Board of Family Practice, an Associate of the American Society of Addiction Medicine, and a clinical instructor in the Department of Family Medicine for Wesley Medical Center, where he had previously served as president of the medical staff. Negative publicity: The O'Reilly Factor Tiller was discussed in 28 episodes of the Fox News talk show The O'Reilly Factor in the years leading up to his death, focusing national attention on his practice. Although he later denied it, show host Bill O'Reilly sometimes described him as "Tiller the Baby Killer," a nickname that Congressman Robert Dornan had used on the floor of the US