The Justice Department and a number of state attorneys general on Tuesday challenged a proposed $11 billion merger between US Airways Group and American Airlines’ parent company, AMR Corp.
US Airways shares fell more than 10 percent at one point in active trading. The two airlines strongly defended their combination.
“We will mount a vigorous defense and pursue all legal options in order to achieve this merger and deliver the benefits of the new American to our customers and communities as soon as possible,” they said in a statement.
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