Under the Balanced Budget and Emergency Deficit Control Act of 1985, as amended by the Budget Control Act of 2011, CBO is required to provide estimates of the caps on discretionary budget authority for each year through 2021 and whether a cancellation of budgetary resources (or sequestration) might be necessary if those caps are breached. The Administration's Office of Management and Budget has sole authority to determine whether a sequestration is required and, if so, the proportional allocations of any necessary cuts.