Repeal the 17th Amendment and give representation in the US Congress back to the State legislatures. Direct election of Senators is anti Republic and contrary to the plan of the Founders.
The intention was to make part of the government answerable to the States.
And part of the argument for changing that was because the States were corrupt.
That might have been true—but I would prefer to have my corruption closer to home where I may have some control over it—and at least those corrupting the Senators will have their home state in mind when corrupting them.