protectionist

One who favors the protection of some branch of industry, or of native industries generally, from foreign competition, by imposing duties on imports and by other means.

Favoring or supporting the economic doctrine of protection.

One who favors protection. See protection, 4.

Of or pertaining to protectionism, or an advocate thereof.

Someone who believes in protecting domestic producers by impeding or limiting the importation of foreign goods and services via actions taken by government.

an advocate of protectionism