DOJ lets waiting period expire on T-Mobile / MetroPCS merger, hints it's good to go

We're sure that MetroPCS and T-Mobile USA executives were on pins and needles wondering whether or not their proposed merger would clear all the regulatory hurdles. While they're not officially free and clear, the Department of Justice has given a strong hint that the carrier union will go through. The government branch just let the mandatory waiting period expire without raising any objections; if it had thought there were serious antitrust issues, it would have piped up by now. Before anyone p...