Among the issues of contention are health services, wages, the protection of temporary agency workers and job security, as well as the union`s demand to stop the import of genetically modified vehicles manufactured in other countries, such as Mexico. The proposed interim agreement will be considered Thursday by the National Council, nearly 200 local union leaders who will meet Thursday at 10:30 a.m. .m in Detroit. If they agree, what will be formally a provisional agreement will be subject to ratification by GM staff represented by the UAW. . . .