India, Feb. 22 -- US President Donald Trump raised his newly imposed global tariff to 15% on Saturday, maxing out the statutory ceiling of the legal provision he had invoked just a day earlier - and signalling that steeper levies were on the way.

In a post on Truth Social, Trump said he was raising the 10% worldwide tariff he had imposed under Section 122 of the Trade Act of 1974 "effective immediately" to the "fully allowed, and legally tested, 15% level." He called Friday's Supreme Court ruling that had struck down his original tariff regime "ridiculous, poorly written, and extraordinarily anti-American."

The move comes less than 24 hours after the Supreme Court's 6-3 ruling that Trump's use of the International Emergency Economic Pow...