Several recent high-profile mergers in the communications industry have faced scrutiny from multiple U.S. federal agencies.  These transactions, both successful and unsuccessful, have drawn attention to the process by which the U.S. government approves or blocks mergers and acquisitions in the communications and broadband Internet industries.  Parallel investigations by both the Federal Communications Commission and U.S. Department of Justice highlight the similarities and differences between their respective merger review processes. While the agencies analyze transactions simultaneously…