President Trump has called the word tariff “the most beautiful word in the dictionary.” He imposed hefty tariffs during his first term and promised expansive new ones as he pursued his second. On his first day back in the White House in January, he issued an executive order directing his cabinet picks to prepare even more tariffs.

It’s been hard to keep track of the state of tariffs since.

April was an especially turbulent month: Mr. Trump issued his most punishing tariffs yet before abruptly reversing them for 90 days. China was not included in that pause, and tariffs on China skyrocketed to a minimum of 145 percent.

He issued many of the same threats in July, when he said that he would place a 30 percent tariff on goods from the European Union and Mexico, a 50 percent tariff on all imports from Brazil, and tariffs of at least 20 percent on 21 more countries.

Many officials say negotiations with the United States have been continuing, and in some cases, leaders thought they were close to a deal before Mr. Trump issued new threats over social media.

Mr. Trump’s strategy has already upended diplomatic ties, shaken markets and confounded entire industries. The tariffs target nations that supply a wide variety of goods to the United States, and Americans are likely to see higher prices on cars, electronics, groceries, liquors, lumber and gas.

Here’s a timeline of President Trump’s widening — and constantly shifting — tariffs.

Jan. 20 ???????? ????????

Hours after he was sworn in, Mr. Trump announced that he would implement additional 25 percent tariffs on imports from Canada and Mexico starting on Feb. 1, accusing both countries of not doing enough to stop the flow of drugs and migrants into the United States. Read more ›