Tariffs result in higher costs to consumers in the short term due to the additional tax consumers have to pay. This extra tax is harmful to the economy. The reduction in economic growth is deflationary and sufficient to counter inflationary pressure from higher prices on tariffed goods. As a result, tariffs should lead to deflation or have at most a neutral effect on inflation.
Did I sum that up correctly?
I'm not sure there is overall inflationary pressure from the higher prices on tariffed goods, but yes. It's a dynamic system, and I believe that people change their behavior and buying patterns in response to taxes. This is my belief, and I have no real evidence other than the fact that the rate of CPI growth did not increase after the 2018 tariffs until after the COVID stimulus came into effect.