nominee for Obama, but was never seriously considered. She spoke on the opening day of the Democratic National Convention in August 2008. 2016 presidential election In 2013, McCaskill announced that she would be supporting Hillary Clinton in the 2016 presidential election. During the primaries, McCaskill was among Clinton's top surrogates. She described Bernie Sanders as "too liberal" and "extreme" and saying that the enthusiasm of his supporters was no more impressive than that of Ron Paul's supporters in 2012. On March 21, after Clinton's sweep of Southern primaries, McCaskill called for Sanders to throw his support to Clinton. Economic issues In 2013, the National Journal gave her a 46% score on "Liberal on Economic Policy" and a 53% score on "Conservative on Economic Policy". In 2016, FreedomWorks and the Club for Growth, both of which support lower taxes, gave her ratings of 10% and 15%, respectively. In November 2017, President Trump visited Missouri to promote his tax bill and said that if McCaskill didn't support his tax plan, she should be voted out of office. She said that she could support a tax bill put together "in a bipartisan way" and that she would support "doubling the standard deduction", "enhancing the child tax credit", and even "some corporate tax relief as long as we were cleaning up some of the loopholes that allow so many corporations to avoid paying their fair share." But she did not support Trump's tax bill, which in Missouri, she said, would mainly help rich St. Louis suburbanites. Ahead of an August 7, 2018, Missouri vote on Proposition A on adopting a right-to-work law in Missouri, McCaskill endorsed a "no" vote on the proposition. Immigration In 2010, McCaskill voted for the DREAM Act, which would have given undocumented immigrants who entered the United States as children a pathway to citizenship provided that they fulfilled certain conditions. In January 2018, McCaskill and three other Democratic senators were cosponsors of the Border and Port Security Act, legislation that would mandate that US Customs and Border Protection "hire, train and assign at least 500 officers per year until the number of needed positions the model identifies is filled" in addition to requiring the commissioner of Customs and Border Protection to determine potential equipment and infrastructure improvements that could be used for ports of entry. McCaskill has said that "protecting the DREAMers has to be a very top priority." McCaskill