Sure. There always is.
The problem is the USA has become very hostile to mining, even when it would be extremely profitable.
You can always find someone to sue to stop a potential mine.
The risks involved become far to great unless the potential profit is astronomical.
I know of three large copper deposits (with associated other metals) which have not been developed purely for political reasons. They are large, rich deposits.
One in Wisconsin near Crandon.
One in Arizona near Tucson.
One in Minnesota (as mentioned by a colleague) near the BWCA.