The case has been closely watched due to its potential impact on the global economy. The central legal question is whether President Trump overstepped his authority by imposing the tariffs, or whether that authority rests with Congress.

Critics of the tariffs argue that the power to dictate tax rates, including tariffs, is constitutionally vested in Congress, not the executive branch. They point to the separation of powers doctrine as a safeguard against presidential overreach in matters of trade and taxation.

President Trump, in a social media post on Friday, defended his use of tariffs, though the specific content of the post was not detailed. Supporters of the tariffs have argued that they were necessary to protect American industries and jobs, and to address unfair trade practices by other countries.

The Supreme Court's decision will have significant implications for the balance of power between the executive and legislative branches in matters of trade policy. It could also affect the future use of tariffs as a tool of economic policy. The ruling is expected to provide clarity on the scope of presidential authority in trade matters.