Answer
This is a bad belief because when stiff controls are put on goods that offer competition with U.S trades, many problems will occur such as hurting of the U.S exports.
Explanation
When tariffs are placed on imports, tariffs will have to be placed on export too. This will result into hurting citizens in the long-run. For example, in the Smoot-Hawley Tariff Act of 1930 where president Hoover raised protective tariffs on imports so as to protect American business, the process backfired a led to more depression because other countries also increased tariffs with affected U.S exports.
