Apple Inc. didn’t violate the False Claims Act by bringing two Indian nationals into the U.S. on a business B-1 visa to perform a training contract, a federal court ruled.

Whistleblower Carl Krawitt couldn’t show that Apple improperly relied on B-1 visas to bring the trainers into the country instead of the more expensive and numerically capped H1-B visas, nor could he show that Apple willfully ignored immigration rules, the U.S. District Court for the Northern District of California said.

There is “ambiguity in the allowable uses of B-1 visas arising out of differences in interpretation of relevant immigration laws...