Bill Clinton increased spending and yet thanks to economic growth, we wound up sporting a nice surplus that was pissed away.
The best way to reduce debt is for the economy to grow. At that point, these shortterm stimulus projects will be done and spending can go back to normal.
Ideally, our spending should be around $2.5T and it should increase with population and inflation growth.
Bush went quite a bit over that year after year. Obama's doing it now, but I have faith that the stimulus isn't going to need to be repeated again.
However, when necessary in the future, we need to be ready to spend a bit extra to stabilize the economy just like we're doing now.