Factbox: Trump and Biden take sharply different paths on immigration

U.S. President Donald Trump's push to crack down on illegal immigration and reshape legal immigration was at the heart of the Republican's winning 2016 campaign and has remained at the forefront of his White House agenda. Former Vice President Joe Biden, the likely Democratic challenger in this year's presidential election, promises to rescind many of the policies put in place by Trump's administration and instead advance his own platform if he wins on Nov. 3. Here is a look at some of their immigration stances.