Sometimes that's easy to do, sometimes it's not
I would take a severe turn back towards environmental awareness and protection
Greatly reduce military spending, put that money towards public education, health, VA care, etc
Invest in renewable energies, giving tax breaks or similar financial perks to study and improve up current tech
Rebuild the infrastructure from coast to coast.
Reduce prison populations, eliminate the fuck out of private prisons.
Make Internet access a utility, not a luxury. No house in this country should not have easy access to the Internet.
That's about it