(Bloomberg) -- Nvidia Corp. led declines in tech stocks after a report Washington could close loopholes in the sale to China of powerful chips used to train artificial intelligence, potentially denting sales in the world’s top semiconductor market.Most Read from BloombergStudent Loan-Relief Backers Warn Biden ‘Failure Isn’t an Option’UBS Preparing to Cut Over Half of Credit Suisse WorkforceWagner Chief Lands in Belarus as Putin Says ‘Civil War’ AvertedPickleball Injuries May Cost Americans Nearl