Jacob Vigdor, professor of public policy and economics at Duke University, explains why immigrant assimilation is important to a society. Vigdor offered these comments during a May 10, 2010, presentation to the John Locke Foundation's Shaftesbury Society. Watch full-length versions of John Locke Foundation presentations here: http://jlf.streamhammer.com/speakers/.... Video courtesy of CarolinaJournal.tv.