In a stunning rebuke, the U.S. Supreme Court struck down President Donald Trump's sweeping global tariffs this past Friday, ruling that he exceeded his constitutional authority. But rather than accept defeat, Trump has doubled down - vowing to impose a new 10% tariff on all imports and launching fresh trade investigations that could lead to even higher levies.

What this really means is that the president has opened a new chapter of economic uncertainty, both at home and abroad. After years of Trump wielding tariffs as a cudgel to reshape global trade, the court's decision has now upended the leverage he and his negotiators have held over other countries. As Reuters reports, Trump's latest moves are an attempt to regain that lost power - but they risk further damaging relationships with key trading partners and sowing confusion in financial markets.

A Defiant Response

In the aftermath of the Supreme Court's 6-3 ruling, which found that Trump's use of emergency powers to impose tariffs was unconstitutional, the president reacted with fury. He lashed out at the justices, calling them "very unpatriotic and disloyal to our Constitution" and even suggested they were influenced by foreign interests - without citing any evidence.

Then, in a hastily organized press conference, Trump announced that he would impose a new 10% tariff on all imports for the next 150 days. This move, enabled by a little-used statute called Section 122 of the Trade Act of 1974, aims to temporarily replace the tariffs the court struck down.

But the broader implications of Trump's defiant response are concerning, according to analysts. By circumventing Congress and the courts, the president is signaling that he's willing to pursue his trade agenda by any means necessary - potentially reigniting the kind of global trade tensions that have roiled markets and disrupted supply chains for years.

Ripple Effects Ahead

The White House has sought to downplay the impact, with Treasury Secretary Scott Bessent claiming the new tariffs will result in "virtually unchanged" revenue. But that belies the broader uncertainty the president's actions have unleashed.

For one, the legal status of Trump's new tariffs is murky at best. The law he's invoking has never been used this way before, and it's unclear whether it will withstand court challenges. Additionally, the president's renewed trade hostility could jeopardize delicate negotiations over issues like the U.S.-Mexico-Canada trade agreement.

As recent coverage has shown, financial markets initially surged on the news of the Supreme Court's ruling, only to give up those gains as investors grappled with the prospect of a new trade war. And with the president vowing to pursue "very powerful alternatives," the road ahead seems increasingly uncertain for businesses and consumers alike.