"Last week, a 69 page NASA Powerpoint presentation on the costs of in-orbit fuel depots was leaked to SpaceRef.Com. The July 21, 2011 document, a preliminary report of a more detailed in-house NASA study that at least one Congressman has requested and been promised, says it would be dramatically faster and cheaper to use existing rockets in combination with in-orbit fueling to get to the Moon, an asteroid, and other deep space destinations than to build the heavy-lift Space Launch System (SLS) rocket. The Tea Party in Space (TPIS) is calling it an "integrity issue" for NASA."
Is This NASA Document Saving or Killing Manned Private Spaceflight?, Popular Mechanics
"NASA, which wants to send its astronauts aboard privately built spacecraft, recently released the first draft of a document detailing how it would ensure those ships are safe. The contract is a tome of legalese, but buried inside the hundreds of pages are provisions that have some private space companies worried that NASA's oversight could slow them down."