IOWA CITY, Iowa - Seeking to add heft to his presidential bid, Democrat Barack Obama is offering a sweeping plan that would provide every citizen a means to have health coverage and calls on government, businesses and consumers to share the costs of the program. Obama said putting in place universal health coverage has been debated for decades, but the time has finally come to act. He said his plan could save the average consumer $2,500 a year and bring health care to all. "The time has come for universal, affordable health care in America," Obama said in remarks prepared...