Their attempt to build an economical, reusable spaceship resulted in an overpriced money-sink that required a complete rebuild at every launch and ate $700 million every time it lifted off.
You're conflating NASA with Congress. There is a difference. The vast, vast majority of everything negative about NASA today, and why its in such a shape, is specifically because of Congress.
The shuttle that flies today, aside from being a lifting body, has nothing to do with what NASA originally designed and fought to build. Congress, and by extension lobbying from NSA and the Air Force, is what made the shuttle a cluster fuck. Sorry, but any blame for the cluster fuck that is the space shuttle does not belong with NASA, but rather the NSA, the USAF, and most definitely, the US Congress.