US President Donald Trump has criticised American tech companies for building factories in China and hiring workers in India, warning that under his presidency, "those days are over", reported news agency PTI.

Trump made the remarks on Wednesday at the AI Summit where he signed three executive orders related to Artificial Intelligence, including a White House action plan to utilise AI.

He said that for too long, much of America's tech industry pursued a "radical globalism" that left millions of Americans feeling "distrustful and betrayed."