As others here have said, an increase of only 10% or 20% will do nothing, not even motivate other countries to blink. They'll just reciprocate with tariffs of their own which will add inflation across even more products. To motivate structural change, you'd need tariffs of 100% to 500% -- forcing a new business model.

The real objective of Trump's mindless minions (e.g. Musk) is to create bragging points that will motivate bloviate-receptive voters to believe something was done by the administration to 'fix' problems, thereby increasing support for the party without actually doing anything useful.