India, Feb. 21 -- The US Supreme Court on Friday invalidated President Donald Trump's most sweeping and ambitious tariffs, leaving a whopping $133 billion question unanswered - what happens to the import taxes the administration has already collected under levies now deemed unlawful?

The justices who delivered the 6-3 ruling, killing tariffs that the US President announced as soon as he returned to the White House in January last year and implemented in August, did not say anything on refunds of the $133 billion already collected under Trump's levy measure. Track latest in Trump tariffs here

Businesses are already seeking refunds, but the path ahead could be rocky.

Once the dust settles, trade attorneys say importers will probably reco...