

The Rockies stand in the way, and the energy cost of pushing water over them likely exceeds the going price of water. We do have lots of water pipes west of the Rockies, but no way to economically get water from the Mississippi.
Also, oil is worth a lot more per gallon than water, and used in smaller quantities, which is why oil pipes are economical.
I expect desalination to become mainstream before we push much water across the Rockies.
On average since Washington, each Presidential term has had 2.1 SCOTUS appointments. It’s not a bad expectation, statistically speaking. But it’s just an average, since Biden only has one so far, and Trump got three.