Reddit mentions of The Great Betrayal: How American Sovereignty and Social Justice Are Being Sacrificed to..

There is no such thing as 'free trade' or 'protectionism'. All trade agreements have a mix of both. For instance copyright is not free trade nor is intellectual property. Preventing dominant monopolies is a good idea but not 'free trade'.

A good balance needs to be struck along with institutions that are able to change with time and world events.

Tariffs do protect US businesses however and have received bad press due to the neoliberal/neocon subversion of the Republican party who have brainwashed people into acting against their own interests.

A good read on free trade/protectionism by Pat Buchanan, Vox Day recently plublished a debate in article format on exactly this topic so you might be able to find some good references in there and use it as a stepping stone for further research.

This is a good article favouring Trump's policies and mentioning other prominent sympathetic people. Richard McCormack one of the authors mentioned in that article wrote a good book exploring the decline of American manufacturing and the effect of free trade