The move is another sign of the department's recent aggression on antitrust.
The deal to merge US Airways and American Airlines, which would create the world’s largest airline, has suffered a big setback. In a surprising move, the US Justice Department filed an antitrust lawsuit, saying the transaction poses “substantial harm” to consumers. That means US Airways and American will have to offer more concessions, like giving up more take-off and landing slots at airports, to try to win approval, or risk losing the deal all together.
The Justice Department also won an antitrust lawsuit against Apple, which was accused of working with five book publishers to increase the price of e-books. That successful track record has no doubt emboldened government officials even further.