If you think of cancelling a NASA project is that easy, think again. A project for a mothballed space exploration program was continued despite it being canned 4 years ago. The amount spent was $349M for the completion of a test tower. Will it ever be used? Congress would like to know.
The A-3 tower is located in Stennis Space Center, Mississippi. The program was stopped in 2010 with the purpose of testing engines in conditions similar to deep space. However, it soon became apparent that NASA would not be needing it anymore.