This was probably expected.. and the administration says it has a Plan B.. but for now..

https://thehill.com/regulation/court-battles/5747353-read-supreme-court-trump-tariffs-ruling/

The Supreme Court cast aside the bulk of President Trump’s sweeping tariffs Friday, obliterating a canon of his economic strategy in ruling that his use of an emergency statute to remake global trade was unlawful. 

The decision invalidates what the Trump administration called the president’s most significant economic and foreign policy initiative of his second term, a result Trump has warned could foist financial ruin upon the United States.