Snopes: Did Reagan Warn Of A "Demagogue" Declaring Trade War Against America’s Friends?

Did Ronald Reagan Warn Against ‘Demagogues’ Willing to Declare a Trade War Against America’s Friends? 

During a 1988 radio address, President Reagan railed against those calling for trade tariffs and derided protectionism as "a cheap form of nationalism."

https://www.snopes.com/fact-check/ronald-reagan-demagogues-trade-war/

"What Would Reagan Really Do?" 

Newsweek

http://paxonbothhouses.blogspot.com/2012/10/what-would-reagan-really-do-newsweek_4.html