President Donald Trump's administration has ordered U.S. diplomats to lobby against attempts to regulate U.S. tech companies' handling of foreigners' data, saying in an internal diplomatic cable seen by Reuters that such efforts could interfere with artificial intelligence-related services.

Experts say the move signals the Trump administration is reverting to a more confrontational approach as some foreign countries seek limits around how Silicon Valley firms process and store their citizens' personal information - initiatives often described as "data sovereignty" or "data localization."