Because of President Trump's tariff-policy decisions this year, AutoZone is under increasing pressure to significantly increase prices on many of the auto parts it sells in its 6,600 U.S. stores. The tariffs put in place so far have increased effective import taxes to 17.4%, the highest since 1935, according to Yale Budget Lab. That's a problem for auto-parts retailers, including AutoZone, because many auto parts are made in places like China, Germany and Japan. AutoZone at a glance: Annual revenue in f ...