The Perotistas and Buchananites were warning about going all in on "free trade" not just with Mexico wut especially China. And yeah - like now as back then the Google Jockey will have "links" and man in those days the Google Jockey Caucus lectured the rest of us on how it'll be fine.

You understand it was Reagan and Republicans who changed the course of American trade policy in the 80’s, complaining about unions (who were opposed) and high manufacturing costs and the like. Democrats came to accept it after being pushed (to their own detriment), but make no mistake, this was a freeee market initiative embraces by the Libertarian think tanks and Reagan Republicans.

Now it’s Republicans, or at least Trumpites complaining about it, even though it’s a policy they set in motion 40 years ago. How ironic.

 Reagan, however adhered to his free trade stance, and was the primary proponent of 
the Free Trade Agreement with Canada, which evolved into the North American Free Trade 
Agreement (NAFTA). He also signed, reluctantly, trade legislation designed to open foreign
 markets to U.S. goods. 

reaganlibrary.gov - Reagan presidency

You think Democrats, who are heavily supported by unions, wanted jobs to move to Mexico and Canada? Don’t make me laugh. But Republicans built it to such a fever pitch that even Clinton had little choice but to sign the NAFTA agreement.