Law360, New York ( September 10, 2015, 4:35 PM EDT) -- This fall, Congress faces a challenging agenda of tax and budget issues ranging from the need to fund the government for fiscal year 2016 to a required increase in the federal debt ceiling to avoid an unprecedented and catastrophic default on the nation's debt. In many respects, the legislative challenges now confronting Congress are reminiscent of the 2012-2013 "fiscal cliff" debate, which took an extended period of time and difficult negotiations to resolve. Complicating the fall fiscal agenda will be two significant intervening events: (1) congressional consideration of a resolution disapproving the president's Iranian nuclear agreement; and (2) the visit of Pope Francis, who is scheduled to make an address to a joint session of Congress on Sept. 24, 2015....