The National Democratic Congressional Campaign Committee on Monday announced it was unleashing robocall messages to voters in every Congressional district in Michigan being held by a Republican. In press releases, the DCCC says it has launched robocalls against Michigan Reps. Mike Rogers (R-Brighton), Justin Amash (R-Grand Rapids), Thaddeus McCotter (R-Livonia), Tim Wallberg (R-Tipton), Dave Camp (R-Midland), Dan Benishek (R-Crystal Falls) and Fred Upton (R-St.