Time to 'turn the page' and help middle class, Obama to say

By Steve Holland and Jeff Mason WASHINGTON (Reuters) - President Barack Obama will challenge a skeptical Republican-led Congress on Tuesday to back tax increases on the wealthy to help lift up middle-class Americans in a State of the Union speech that will outline his vision for his last two years in office. On foreign policy, Obama will call on lawmakers to pass a new authorization of military force against Islamic State militants to replace powers that were given to President George W. Bush to