The US trade deficit expanded in August as growth in imports, including Olympic broadcast rights and crude oil, outpaced the gain in exports, Nasdaq reported. The trade gap increased 3% from a month earlier to a seasonally adjusted $40.73 billion in August, the Commerce Department said Wednesday. Imports rose 1.2% while exports rose 0.8%. Of the $2.6 billion overall increase in imports during the month, $1.2 billion came from charges for the use of intellectual property, reflecting payments to broadcast the 2016 Summer Olympic Games, the Commerce Department said.