Congressional Budget Office
This agency's primary mission is to provide economic and budget
analyses to Congress. Part of this mission is their "Current
Economic Projections," which offers both short-range (18-24 month)
and long-range macro forecasts. Note that the latter do not include
cyclical fluctuations. More information on this office can be found
in the entry Congressional Budget Office (CBO) on them.
http://www.cbo.gov/