BISMARCK, North Dakota, April 26 -- Gov. Kelly Armstrong, R-North Dakota, issued the following news: * * * Armstrong highlights benefits to students as he signs bill requiring phone-free K-12 public schools in ND BISMARCK, N.D. - A new law requiring K-12 public schools in North Dakota to adopt phone-free school policies may be the most impactful legislation of this session, Gov. Kelly Armstrong said as he signed the bill today surrounded by students, school officials, legislators and First La  more