analysis of the 2006 gubernatorial race attributed Heineman's win to his opposition to Class I rural school reorganization and the granting of resident college tuition rates to the children of undocumented immigrants, helping him win over rural voters. This proved critical in the primary. While Osborne carried most of the Omaha and Lincoln areas, which cast more than two-thirds of Nebraska's vote, Heineman won by sufficient margins in western and central Nebraska to secure the nomination. In 2010, Heineman signed two bills restricting abortion. One bill banned abortions at and after 20 weeks of pregnancy, based on the claim that fetuses of that age can feel pain; the other required that women seeking abortions be screened for mental-health problems. Heineman was reelected in 2010 with 73.9 percent of the vote to Democratic nominee Mike Meister's 26.1%. In June 2011, Heineman became the first sitting governor to endorse Mitt Romney's presidential campaign. As of 2012 Heineman worked with the Nebraska Legislature to pass the "largest tax relief package in Nebraska history". His website describes him as a "leader for Nebraska’s agricultural industry", stating that he secured trade deals for the export of wheat, soybeans and other commodities. In January 2013, he approved a revised route for the Keystone Pipeline, that would avoid the environmentally sensitive Sandhills region, but cut through the High Plains Aquifer. Heineman was able to do this after a 2012 state law "let oil pipeline companies take their projects directly to the governor, bypassing the Nebraska Public Service Commission", which Nebraska justices upheld even though a lower court had blocked this law. In March 2014, together with Nebraska Attorney General Jon Bruning, Heineman brought Nebraska into a lawsuit filed by Missouri Attorney General Chris Koster against California's egg production standards; in a press release, Heineman stated "This is about protecting Nebraska’s farmers and ranchers from the potential for regulatory burdens that hamper interstate trade." In October 2014, federal judge Kimberly Mueller dismissed the lawsuit, rejecting the states' challenge to Proposition 2, California's prohibition on the sale of eggs laid by caged hens kept in conditions more restrictive than those approved by California voters in a 2008 ballot initiative. Heineman had previously squared off against the Humane Society of the U.S., a champion of Proposition 2. In April 2014, Heineman signed a bill striking the word "firearms" from the list of those items a governor may suspend during a