Republican presidential candidate Donald Trump answers questions after a campaign forum Nov. 19 in Newton, Iowa.
Republican presidential candidate Donald Trump answers questions after a campaign forum Nov. 19 in Newton, Iowa. Matthew Holst The Associated Press
Republican presidential candidate Donald Trump answers questions after a campaign forum Nov. 19 in Newton, Iowa. Matthew Holst The Associated Press

Michael Gerson: Trump drags Republicans into ugly nativism

November 23, 2015 09:05 AM