In U.S. mergers, no one waits for this waiting period

Reuters: Sometime soon, maybe in the next month or so, a federal judge is expected to decide whether the creation of the world's biggest passenger airline, as envisioned by two companies and the U.S. Justice Department, was really a good idea.

But even if she decides to give the merger a thumbs down, an unlikely outcome that would shake investors and the public, it might be too late for her to do much anyway.

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