>"Why are we not instigating gas and oil rationing across the continent? "
Tried that already, didn't work...
Roovevelt did it. Carter did it.
The commerce clause gives congress the power to regulate it, if it crosses state borders.
>"kind of like when they just up and decided to start stealing everyone's gold?"
The takings clause prohibits that.
FDR did a lot of stuff that was unconstitutional. He was the closest thing the US has ever had to a king.
This is why we have the 22nd Amendment.