The artificial increase in prices caused a tariff is first put into place is the beginning of the story and not the end of it. At first prices will increase because there is not a domestic supply(yet) to meet demand. But that is the point. Behind the tariff domestic supplier will reap huge profits which incentivizes other domestic sources to come on line. Eventually the domestic supply will meet demand and all will once gain have to compete with each other lowering the price. This makes greed work for the American worker instead of against the American worker.
So a 100% tariff is not a bad idea.