WASHINGTON (Reuters) -As the U.S. Supreme Court weighs the legality of Donald Trump's sweeping tariffs, a Democratic-appointed judge's opinion from an earlier stage in the case could offer the Republican president a roadmap for victory in a major test for one of his core economic policies.

Greta Peisch, former USTR general counsel, said that while Supreme Court justices seem skeptical of Trump's tariff authority, she believes that the administration can use other authority to recreate the impact.

The Court of International Trade and the U.S. Court of Appeals for the Federal Circuit both held that IEEPA does not permit revenue-raising tariffs, finding that the law authorizes only regulatory restrictions necessary to counter genuine foreign threats.

The Supreme Court heard arguments Wednesday over President Trump's sweeping tariff policies. Erica Brown reports from the Supreme Court.

The U.S. Supreme Court has heard arguments over President Donald Trump's tariffs, a key part of his economic and foreign policy

If the Supreme Court allows Trump’s steepest tariffs to stand, price increases may accelerate while economic uncertainty associated with the tariffs could put downward pressure

The Supreme Court appeared deeply concerned Wednesday with President Donald Trump’s reliance on a vague federal law to impose global tariffs, with several members of the court’s conservative wing picking apart the administration’s position in a case that could have sweeping implications for the economy and presidential power.

A majority of Supreme Court justices seem skeptical about President Donald Trump’s ability to unilaterally impose far-reaching tariffs, putting at risk a cornerstone of his agenda in the biggest legal

The Supreme Court heard arguments Wednesday over whether a federal emergency powers law authorizes President Trump's most sweeping tariffs.

U.S. Supreme Court justices appeared heavily skeptical of the government's arguments for using emergency powers to impose tariffs during oral arguments.

The Trump administration got a chilly reception at the Supreme Court, where a majority of the court questioned President Donald Trump’s novel use of an emergency powers law to impose worldwide tariffs

The U.S. Supreme Court is hearing arguments Wednesday over President Donald Trump’s sweeping tariffs, putting a tool at the center of his economic and foreign policy agendas squarely before the high court.

The Supreme Court hears arguments Wednesday over the legality of President Donald Trump’s global tariffs program in a blockbuster case with extraordinary significance for American consumers and businesses,

A Supreme Court showdown over Trump’s tariffs may reshape the balance of power between the White House and Congress.

The fate of the majority of President Donald Trump’s tariffs is in the hands of the US Supreme Court after lower courts ruled that they were issued illegally under an emergency law. The tariffs have remained in place to allow the Trump administration to appeal to the highest court,

The Supreme Court will hear arguments over the legality of President Donald Trump's global tariffs program in a blockbuster case with extraordinary significance for future presidential power.

President Donald Trump’s power to unilaterally impose far-reaching tariffs is coming before the Supreme Court on Wednesday in a pivotal test of executive power with trillion-dollar implications for the global economy.

The day before a US Supreme Court showdown over President Donald Trump’s global tariffs, yet another lawsuit contesting his trade policies hit the docket.

We will get a clear indication when the court convenes on Wednesday to hear two cases concerning the legality of the tariffs imposed by the president. At this point, it’s estimated that about $1 trillion in tariffs has already been collected.

Lower courts have struck down the bulk of Trump's tariffs as an illegal use of emergency power, but the nation’s highest court may see it differently.

The future of much of President Donald Trump’s tariff campaign rests in the hands of the US Supreme Court, which will decide whether he can use an emergency law that had previously never been wielded to impose import taxes.

The Supreme Court reined in Democratic presidents and their costly regulations. Do the same rules apply to Republicans?

President Trump may have finally pushed the conservative majority of the Supreme Court too far. During oral arguments over his emergency tariff regime, several Republican-appointe

Today, U.S. Solicitor General D. John Sauer argued before the Supreme Court about the legality of President Trump’s sweeping tariffs. MSNBC Justice and Intelligence Reporter Ken Dilanian shares more details from outside the Supreme Court.