And then came political agenda....
Right now is a critical time in the normal budget cycle ~ this is when they submit their capital requests for the next fiscal year ~ Feb/March. If Solomon wants her office redecorated at a cost of more than $10,000 (or whatever the current amount is) she needs this special approval. If she wants a new building, or an extra satellite, she has to submit the request now, and get it approved for inclusion in the appropriations NEXT YEAR.
Operating budget items follow a different time-track.