Christopher Tappin was fined $11,357.14 (£7,095) in addition to his 33-month prison sentence for selling surface-to-air missile parts to Iran, a spokeswoman for the US District Court in El Paso, Texas said.
More top news
An independent investigation has begun into finances at taxpayer-funded Broadmoor Hospital.
While the economy has shown signs of improving, the number of UK companies issuing profit warnings has hit a six-year high, research shows.
The Child Support Agency has collected £1.2 billion in maintenance over the past year, with £330 million coming direct from pay packets.