The battle between Congress and the White House over Iran begins in earnest this week as the Republican-controlled Senate prepares to tackle sanctions legislation that critics say could derail nuclear negotiations.
President Barack Obama is expected to make a forceful case against the new sanctions push in his State of the Union address on the night of Jan. 21. The very next morning, Senate Foreign Relations Chairman Bob Corker, R-Tenn., will hold a hearing on "the status of talks and the role of Congress."