The "Los Angeles Times" noted that Fiorina had conservative positions on certain social issues. She personally opposed abortion, except in cases of rape, incest, or endangerment of the mother's life. As a private citizen, she stated that she voted for Proposition 8, which defined marriage as a union between one man and one woman. Following an August 4, 2010, federal court ruling that Proposition 8 was unconstitutional, Fiorina expressed disagreement with the ruling, saying that California voters spoke clearly against same-sex unions when a majority approved the proposition in 2008. She stated that she opposed litmus tests for Supreme Court nominations and did not favor a federal "personhood" amendment. Fiorina had called global warming a "serious issue" but said that the science surrounding it is inconclusive, saying "I think we should have the courage to examine the science on an ongoing basis." In a campaign ad, Fiorina likened Boxer's concerns over global warming to worrying about "the weather." Fiorina accepted contributions from the coal industry as well as Koch Industries. Fiorina opposed the cap-and-trade legislation supported by Boxer, and thought efforts to control greenhouse gases would cost 3 million jobs and are "massively destructive".