New Delhi, Feb. 21 -- US President Donald Trump said on Friday he signed off on a global 10-percent tariff "on all Countries," hours after the Supreme Court ruled his levies on imports are illegal.

"It is my Great Honor to have just signed, from the Oval Office, a Global 10% Tariff on all Countries, which will be effective almost immediately," Trump wrote on his Truth Social platform.

Even as the latest Supreme Court ruling invalidated Trump's "reciprocal" and emergency tariffs, Trump said on Friday that "nothing changes with India."

The US and India have struck an interim trade agreement under which Washington slashed the "reciprocal tariff" to 18 percent from the previous 50 percent. New Delhi, on the other hand, agreed to impose zer...