Stewart, too, has risen on the backs of undocumented immigrants, touting with each political rung he has tried to climb a policy that Prince William County approved in 2007.Three years after Prince William enacted its policy, it paid $385,000 for the University of Virginia to study the effects. Among the findings, according to a 2010 Washington Post article: Hispanics – most of whom were in the country legally – were avoiding the county, and it “did not succeed in implementing an immigration policy without damaging its reputation as a welcoming place to live.”