India, Sept. 1 -- Neal Katyal, an Indian-origin lawyer, who is the son of Indian immigrant parents, played a major role in challenging US President Donald Trump for his decision to impose additional tariffs on several nations, a move that has been ruled as illegal by a federal court.

The ruling affects Trump's "reciprocal" tariffs that he imposed on several nations across the globe, an incident that led to global trade tension.

The ruling, however, will not be effective until October 14, giving time to the administration to ask the country's Supreme Court to take up the case.

The ruling assumes significance since one of the lead lawyers in the case was India-origin Neal Katyal, who had challenged the President's authority to impose the...