"Not at all," said Louis DeSipio, a UC Irvine political science professor who studies immigration. "I’m not exactly sure where (Trump) got that from. Perhaps he heard it from some local sheriff who wants a wall."

For the full story, please visit http://www.politifact.com/california/statements/2018/mar/13/donald-trump/no-mr-president-california-not-begging-wall/.