I have a lot of good ideas. Like a construction project to rework all of the underground piping in america (obviously not done by just me). Now is the best time to do it as the aging infrastructure is beginning to collapse It would have much better draining technology for regions susceptible to flooding and it would span the entire country linked to underground storage tanks as well as hydro electric generators. The revamped system would require a lot of skilled workers (new domestic american jobs) as well as a need for american made products like steel and upon completion (long time, decade or more atleast depending on work pace) it would provide electricity to a good bit of the country, provide water to droughted regions, take water off the streets of previously floodable regions, and create many permanent jobs for people in the fields of system management/maintainence and security.

There's a few energy ideas i came up with too but they are more like experiments instead of actual ideas. Huge benefit if they work tho.