If the crux of the supply-side inflation argument is that government doesn't want to make changes to increase supply (more immigrants, more o&g drilling, more building, etc.), I have faith congress will do what it always does when their ass is on the line: turn a blind eye, cause a distraction somewhere else, and when nobody is looking, pass laws on (or refuse to legislate other laws) some activities to increase drilling, building, immigration, etc. etc.
It's in every congressperson's best interest to have low prices. Fat, happy constituents don't want change.