A Chicago cop who entered a man’s apartment without a warrant following a domestic violence complaint involving the man’s 1-year-old child was not unreasonable, a federal judge ruled last week.U.S. District Judge Rebecca R. Pallmeyer ruled in favor of Sgt. Christopher Vacek, who was accused in a civil suit of conducting an unlawful search when he entered Earl Conner’s apartment without a warrant.“The undisputed facts here demonstrate that exigent circumstances existed to allow a warrantless entry in …