It shows that personal grudges rather than simple economics are a driving force in the U.S. leader’s use of tariffs.

President Donald Trump said he planned to impose a steep 50% tariff on all imports from Brazil as he accused the South American country of carrying out a "witch hunt" in the prosecution of Brazil's former president,

For the third time in three months, Donald Trump has identified a foreign ally facing legal trouble. And also for the third time in three months, the American president has condemned the foreign case as a “witch hunt.