It is unfortunate that we get this more frequently nowadays. Another major scientific endeavor is now on the chopping block in the latest US Congressional budget proposal. The funding for the James Webb Space Telescope, which is supposed to replace the aging Hubble Space Telescope, is being cut.
Read the article on Wired on why it is important to save this project, even with the cost overruns. Again, if you care about this, and you are a US citizen, you need to make your voice heard with your representatives. Government agencies such as NASA, DOE, NSF, etc. cannot, I repeat, CANNOT lobby Congress to save their projects, whereas political organizations and special interest groups can! So unless they hear from you, your politicians will only tend to hear just one side of the story.