Original sentence: Between 2000 and 2004, the country's Hispanic population increased 14 percent while the non-Hispanic population rose just 2 percent.This figure excludes an estimated 12–20 million unauthorized migrants
Edited sentence: Between 2000 and 2004, the country's Hispanic population increased 14 percent, due in part to illegal immigration, while the non-Hispanic population rose just 2 percent.This figure excludes an estimated 12–20 million illegal immigrants