Law enforcement, others warn of safety concerns as new law goes into effect
                                
                                
                                    (Newser) -
                                    As of Tuesday, Texans needed to complete training, a written exam, a proficiency test, and obtain a license to openly carry a handgun in public. As of Wednesday, they needn't do any of that. Texans aged 21 and older who are not prohibited from possessing a handgun can carry...