If there’s no deal on the fiscal cliff, those senators who were forced to work this past week are going to get really whiny. Fiscal-cliff talks stalled Sunday over debates about income taxes, the estate tax, and other issues—even though the country will dive right off that fiscal cliff at midnight Tuesday if no deal is reached. The Senate is set to reconvene at 11 a.m. Monday, and Senate Majority Leader Harry Reid said there would “perhaps” be further developments at that time. But even if a deal is struck, getting it through both chambers of Congress before the deadline could be a challenge. All 100 members of the Senate must agree to approve an expedited vote, so even a single objection would delay it.