[joshuamorton]

You missed the nuance of GP. If senators represent states, they should not be given the power to create laws about people, but instead only about the interactions between states, leaving laws about people up to the House.

This would make the Senate more akin to the Supreme Court, though empowered to craft legislation instead of just rule on existing issues.

[8note]

For example, nothing the Senate legislated would apply to D.C. or Puerto Rico