Manchin is opposed to the DREAM Act, and was absent from a 2010 vote on the bill. Manchin supports the construction of a wall along the southern border of the United States. He opposed the Obama administration's lawsuit against Arizona over that state's immigration enforcement law. Manchin voted against the McCain-Coons proposal to create a pathway to citizenship for some undocumented immigrants without funding for a border wall and he voted against a comprehensive immigration bill proposed by Susan Collins which gave a pathway to citizenship for Dreamers as well as funding for border security; he voted 'yes' to withholding funding for 'sanctuary cities' and he voted in support of President Trump's proposal to give a pathway to citizenship for Dreamers, build a border wall, and reduce legal immigration. On June 18, 2018, he came out against the Trump administration family separation policy. In September 2019, Manchin was the only Democrat on the Senate Appropriations panel to vote for a $71 billion homeland security measure that granted Trump the $5 billion he had previously requested to build roughly 200 miles of fencing along the U.S.-Mexico border.