Getting off the Saudi oil supply seems like a good idea, as does alternative energy sources. I don't think it's feasible to drop Saudi oil in a very short timespan, though. It appears as if US oil production has been generally increasing over the last decade though so maybe that helps.

https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=M...

Edit: Here's another link that seems to show a general decline in Saudi oil imports by the US over the last decade.

https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=M...