The European Union, Canada, Japan and others accuse Washington of not fully complying with a World Trade Organization (WTO) ruling to end outlawed payments to US companies, a program known as the Byrd amendment.
The US House of Representatives last year approved a budget bill to scrap the measure in October 2007. But some funds can still be paid under the program for years after that, prompting protests from trading partners.
In a statement, the EU said the additional tariffs of 15% would be extended from May 1 to 32 new products ranging from paper products, textiles, pens and mobile homes.
They would take the total value of duties to $81.19 million in the 12 months from May 1, up from $36.9 million in the previous 12-month period, it said. (Reuters)
