The last time the US got over protective about imports, we got the Great Depression. Our best economies occur when there is lots of trade. Yes, it should be fair as well as free (minimal tarrifs) and that should be the goal. It isn't always attainable, but there is no turning to protectionism. That would lead to total failure.
The best course for the United States is to compete and one way for that to happen is for government to quit treating our industries like they are the enemy. The industry that I worked in was constantly under attack by bureauocrats and agencies that wanted to restrict, assess fines, levy taxes and put up roadblocks to anything and everything they could.
As example: The company wanted to build a new bleach plant, so they had to get a permit from the state. The state required that certain standards had to be met, but the state could never settle on a set of standards that they would stick with. Everytime the engineering would get under way, the state would make changes. The end result was that the company just gave up, because they realized that the state would never stop moving the goal posts.