Some Nebraskans are calling an elementary school principal a Grinch after she issued a memo to school staff that prohibited certain Christmas decorations and other religious symbols. Jennifer Sinclair of Manchester Elementary in Elkhorn, Neb., was placed on administrative leave Thursday following her directive, the Omaha World-Herald reported. District spokeswoman Kara Perchal said the district would not comment further. "Elkhorn Public Schools District administration promptly addressed the issue at Manchester Elementary School regarding the memo that was sent by the principal to Manchester elementary staff," the district said in a statement. An Elkhorn elementary school principal tried to ban Christmas....