"The Obama administration’s Fiscal 2011
NASA budget retargets agency funding on
developing a U.S. commercial space-
transportation industry, killing the “Moon,
Mars and Beyond” Constellation Program
in favor of a $6 billion “investment” in human-
rating existing launch vehicles and developing
a common crew vehicle to ride on them all."

See:

http://www.aviationweek.com/aw/gener...&channel=space