A "State" in the USA Senate sense is a deprecated aristocratic entity created by the King of England.

The Senate exists to protect the interests of a few 18th Century slaveowners. That's why it was created and how it was used up to the middle of the 19th Century (Missouri Compromise).

The non-existence of an imaginary line across the middle of California is not a justification for the minority to control the majority.

There's no way to defend the Senate without defending slavery.