"Donald Trump Delivers Speech on Immigration Policy; Interview with Democratic Vice Presidential Nominee Senator Tim Kaine; Trump Calls for "Extreme Vetting" of Immigrant". "New Day", www.cnn.com. September 1, 2016.
Daniel Webster, Robert Young Hayne (1850). “Webster and Hayne's speeches in the United States Senate, on Mr. Foot's resolution of January 1830: Also, Daniel Webster's speech, in the United States Senate, March 7, 1850, on the slavery compromise”, p.70