Dismissing the disappointing U.S. jobs report for December as a fluke that was caused by poor weather and seasonal-adjustment problems that will soon be revised away or prove to be an aberration, economists insist that the U.S. is poised for its best growth in years, reaching 3% for the first time in nearly a decade.   Economists say the U.S. will produce its fastest spurt of growth since the Great Recession because there is no big crisis in Washington brewing, U.S. households are better off fin...