The Supreme Court told Joe Biden he couldn't wipe out a trillion dollars in student loans without Congress. They said he'd gone too far – that the Constitution doesn't let a president invent powers that belong to the legislature.
That same reasoning just landed on Donald Trump's desk.
This morning, the Supreme Court struck down the bulk of Trump's Liberation Day tariffs in a 6-3 ruling – and what the majority wrote is already shaking markets, triggering refund demands, and forcing the White House back to the drawing board.
The Supreme Court's IEEPA Ruling and What It Actually Says
Chief Justice John Roberts wrote the majority opinion, joined by Gorsuch, Barrett, and all three liberal justices.
The administration had argued that the International Emergency Economic Powers Act – a 1977 emergency statute – gave the president authority to "regulate importation," which they claimed was legally equivalent to imposing tariffs.
Roberts wasn't buying it.
"IEEPA contains no reference to tariffs or duties," he wrote.
Roberts also applied the "major questions doctrine" – the same legal principle that killed Biden's student loan forgiveness scheme – which holds that when a president claims extraordinary power with massive economic consequences, he needs to point to clear congressional authorization.
Trump's lawyers pointed to a law that doesn't mention the word "tariff" even once.
Roberts noted it was telling that across nearly 50 years of IEEPA's existence, no president had ever invoked it to impose tariffs before Trump – not Reagan, not Bush, not Obama – and that the absence of any historical precedent, combined with the sweeping authority being claimed, pushed well beyond what the statute permits.
Why Kavanaugh's Dissent Is the Most Important Part of This Ruling
Here's what the left-wing celebration is missing.
Thomas, Alito, and Kavanaugh dissented – and Kavanaugh wrote something that matters enormously for what happens next.
"The Court's decision might not prevent Presidents from imposing most if not all of these same sorts of tariffs under other statutory authorities," Kavanaugh wrote.
He's right.
Section 232 of the Trade Expansion Act, Section 301, Section 201, Section 122 – Congress has given the executive branch multiple legitimate pathways to impose tariffs.
Steel and aluminum tariffs? Still standing. They were never touched by today's ruling.
Before the decision even came down, the White House had a contingency plan ready: use the existing statutory toolbox to get to the same place.
The court didn't kill Trump's tariff agenda. It told him to use the right tool – and Congress already built him a whole toolbox.
Trump's Path to Reimposing Tariffs After the SCOTUS Decision
Hundreds of businesses that paid IEEPA tariffs are now pursuing refunds through the courts.
CBP collected roughly $133 billion under IEEPA through the end of last year – and the Supreme Court's ruling was deliberately silent on refund procedures, leaving that battle for the lower courts to sort out.
Markets read the situation clearly.
The S&P 500 jumped half a percent within minutes of the ruling, the Nasdaq surged 0.6%, and the dollar strengthened against the euro and yen – a signal that investors expect the tariffs to come back under different legal authority, not that the trade war is over.
Democrats claiming victory today are celebrating a procedural loss for Trump, not a policy reversal.
The president who called tariffs "life or death" for the American economy isn't going anywhere. He's reloading.
Sources:
- Breanne Deppisch and Ashley Oliver, "Supreme Court blocks Trump tariffs in major test of executive branch powers," Fox News, February 20, 2026.
- "Supreme Court strikes down most of Trump's tariffs," NBC News, February 20, 2026.
- "Supreme Court rules most of Trump tariffs illegal," CBS News, February 20, 2026.
- "Supreme Court strikes down bulk of Trump's tariffs," The Hill, February 20, 2026.
- "Live updates: Supreme Court rules against Trump's tariffs," NBC News, February 20, 2026.