> [alas, I can't find the source for this pre-presidency, its been blown out by current events].

Doesn't help that Google's custom time range search is complete garbage. Searched for "trump tariffs" from 1/1/1980 to 1/1/2010 and almost every link is about the current tariffs but with timestamps between 1980 and 2010.

e.g. "20 Nov 1987 — President Donald Trump issued a slew of tariffs on Chinese goods", "30 Jun 1981 — Ontario Premier Doug Ford announced Monday a 25% increase on electricity exports to some American states as a result of President Donald Trump's tariffs", "31 Dec 1999 — IMF says too early for precise analysis on Trump tariff impact", "1 Feb 2001 — Trump's Global Tariff War Begins"

Did find a couple of links that were chronologically correct - a 1999 Guardian story about Trump wanting to tax the rich(!) and a 1987 NYT story about Reagan putting tariffs on Japan.

(duckduckgo was even worse)