The James Webb Space Telescope (JWST), flagship mission for U.S. astronomy, is in danger of cancellation. If that happens, I hope there's a plan to use the expensive hardware that's already been built as a lawn ornament somewhere, perhaps on the Washington mall as a monument to congressional shortsightedness. After all, the Saturn Vs that never flew have brightened up grassy areas in a few states and there's always a need for new public art.
For more on JWST's travails, see here, here and here. For my piece from a few years ago, on who James Webb was, see here.