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Obama Asia visit: How will US trade deal affect Japan?

23 April 2014 Last updated at 09:53 BST

US President Obama is embarking on a week-long tour of Asia, with the Trans-Pacific Partnership trade deal high on the agenda.

His relationship with Japan could be the key link in the 12-nation free trade agreement, but not everyone in that country supports the deal.

Linda Yueh reports.

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