The U.S. Supreme Court heard arguments on Wednesday regarding the legality of tariffs imposed by former President Donald Trump. The case represents a significant test of presidential power and could have far-reaching implications for the economy and international trade.

During the session, justices from both conservative and liberal sides expressed skepticism about the legal basis for the tariffs. These tariffs, which critics argue infringe on Congress's authority to tax, were implemented under the International Emergency Economic Powers Act (IEEPA). Lower courts previously ruled that Trump overstepped his authority by invoking this law to impose tariffs on imports from numerous countries, including Canada, China, and Mexico.

Solicitor General D. John Sauer defended the administration's position, stating, "These are regulatory tariffs. They are not revenue-raising tariffs." He argued that the revenue generated was incidental to the tariffs' purpose of regulating foreign commerce. However, Justice Sonia Sotomayor countered, saying, "You say tariffs are not taxes, but that's exactly what they are. They're generating money from American citizens, revenue."

The tariffs, which start at 10% and can reach as high as 50% on certain goods, are projected to generate $3 trillion in additional revenue for the U.S. by 2035. Critics of the tariffs argue that the financial burden falls on U.S. importers, who often pass the costs onto consumers.

Chief Justice John Roberts raised concerns about the president's authority, questioning whether Trump's unilateral imposition of tariffs without congressional approval was appropriate. He noted that the Constitution grants Congress the power to impose taxes, stating, "The imposition of taxes on Americans has always been the core power of Congress."

Justice Elena Kagan also challenged Sauer's arguments, asking why presidents would use specific statutes allowing for tariffs if the IEEPA grants them broader authority. Kagan emphasized that the statute in question does not explicitly mention tariffs, which could undermine the administration's position.

The Supreme Court's decision will not be announced immediately, and it remains unclear when a ruling will be issued. The case is seen as a pivotal moment for Trump, who has previously received favorable rulings from the court on other policies during his presidency.

Trump has publicly stated that the tariffs are essential for protecting the American economy and have contributed to the country's financial security. He described the Supreme Court case as "literally, LIFE OR DEATH for our Country" in a social media post.

As the justices deliberate, the outcome of this case could reshape the balance of power between the presidency and Congress, particularly regarding economic policy and international trade. The implications of the ruling will extend beyond Trump’s administration, affecting future presidential actions and the broader economic landscape.