US Airways and American Airlines plane tails
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US moves to block American Airlines and US Airways merger

The US justice department has filed an anti-trust case to block the merger of American Airlines and US Airways.

The $11bn (£7bn) deal, which would form the world's largest airline, was backed by a federal judge in March and has been approved by the European Union.

The complaint says customers would see a price rise as the merger would "substantially lessen competition" in the domestic market.

Michelle Fleury reports.

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