The U.S. is awash with scam text messages. Officials say it has become a billion-dollar, highly sophisticated business benefiting criminals in China. From a report: Your highway toll payment is now past due, one text warns. You have U.S. Postal Service fees to pay, another threatens. You owe the New York City Department of Finance for unpaid traffic violations. The texts are ploys to get unsuspecting victims to fork over their credit-card details. The gangs behind the scams…








