Source: Alan Silverleib and Tom Cohen / CNN Washington – The Senate's top Democrat said Sunday that he has signed onto a debt ceiling deal with President Barack Obama and Republican leaders, pending approval of his caucus. The statement from Senate Majority Leader Harry Reid, D-Nevada, was the first confirmation of a pending deal after legislative leaders dropped hints all day that an agreement was close. "Senator Reid has signed off on the debt-ceiling agreement pending caucus approval," said the [...]