Probably you cannot remember which, because there was non

If there were will tariffs, there will be also tariffs on US products - and the USA already has a trade deficit and this is likely to get even bigger, reducing US exports.

The USA had once a large number of ship model producers (also exporting a lot). Few are left. With increased tariffs, there would be only the US market for those left - not a great opportunity for setting up new producers, especially, if their cost will increase if they have to replace Chinese supplies.

By the way: Glenmarc writes "Glenmarc uses only the top ISO9002 suppliers of resin and hardener base chemicals from companies such as Shell Chemical, Hexion, and BASF". I.e. they are buying those chemicals...