The increase in US exports to Iran happens while Washington has imposed two rounds of punitive measures on Tehran and it continues to press Europe to avoid trade with Iran.
Brazil, the US, Canada and Uruguay are the four North and South American countries that have had major commercial dealings with Iran since 21 March, according to the latest data.
The latest official figures show that there has been a whopping rise in Iran’s exports to the United States in the second quarter of 2016.