Two "sequestration update" reports issued this week by the White House Office of Management and Budget and the Congressional Budget Office serve as stark reminders that Washington's late August doldrums will soon give way to a period of fiscal uncertainty and bitter partisan spending debates. Congress is set to return from summer break on Sept. 6. The 2011 Budget Control Act, known colloquially as "sequestration," remains the law of the land. Additionally, a two-year budget deal passed in late 2015...