• US Treasury Secretary Scott Bessent announces a likely 15% global tariff implementation this week.
• The 15% tariff aims to replace a previous 10% tariff set after a Supreme Court ruling.
• The administration will utilize Section 122 of the Trade Act to impose the new tariffs.
• Legal mechanisms are in place to potentially restore previous tariff levels within five months.
• Market reactions have been mixed following these announcements.

US Treasury Secretary Scott Bessent indicated that President Donald Trump's plan to escalate a broad 10% tariff to 15% is likely to occur this week. This announcement comes in the wake of a Supreme Court ruling that invalidated many of Trump’s original tariff policies, compelling the administration to adopt new avenues for duty imposition under Section 122 of the Trade Act of 1974. "That’s likely sometime this week," Bessent stated during an interview on CNBC, clarifying the timeline for implementation, according to BBC, Channel News Asia, and SCMP.

The recent Supreme Court ruling had previously dismantled the country-specific tariffs that Trump imposed last year on various allies and competitors. In response, the administration enacted a 10% tariff, which will remain in effect for 150 days unless extended by Congress, Bessent explained. He emphasized the expectation that the tariff could return to its previous levels within five months, a statement supported by recent insights from treasury and trade officials, according to BBC, Channel News Asia, and SCMP.

Bessent pointed out that the ongoing investigation concerning national security and unfair trade practices underpins these new tariffs. The administration will utilize legal powers from Sections 301 and 232, which allow for targeted tariffs on specific countries or industries based on investigations. However, these necessitate detailed procedures, including formal inquiries and designated public comment periods, according to BBC, Channel News Asia, and SCMP.

Market reactions to these announcements have varied, with US stock futures showing declines while the S&P 500 managed to rise post-opening. Furthermore, Bessent downplayed potential disruptions in the oil market amid geopolitical tensions, highlighting that the US has ample supplies and has planned for maritime security in critical routes, according to BBC, Channel News Asia, and SCMP.