The US International Trade Commission (ITC) is to study the possible benefits of free trade agreements (FTAs) between the US and members of the Trans-Pacific Partnership (TPP), including Mexico and Canada.

The ITC has previously submitted confidential reports on possible FTAs with other TPP nations to the US Trade Representative (USTR), which has requested the new report.

The fresh investigation has been prompted by the news that Canada and Mexico have joined TPP negotiations – neither country will have been covered by the previous report.

The ITC said it would take into account implementation of US commitments to the WTO and under existing FTAs with TPP countries.

It said it would also assess the economic impact of eliminating tariffs on imports of certain agricultural products from TPP countries on US industries and the wider economy.

The ITC expects to submit its report, which will remain confidential, by 19 November.

But it is seeking input from all interested parties and will hold a public hearing in connection with the investigations on 12 September.

As well as the US, TPP nations include Australia, Brunei Darussalam, Canada, Chile, Malaysia, Mexico, New Zealand, Peru, Singapore and Vietnam.