A congressional trust that any representative can pay into, that is only allowed to invest in wide US-based index funds (or it could build its own index fund) or US bonds, etc. Basically: Allow them to invest in the future of the country they’re managing. Don’t limit it to only politicians, either. Let everyone invest if they want.
I like the idea you’re going for but it’s not sufficient.
An improvement on my original idea then:
A congressional trust that any representative can pay into, that is only allowed to invest in wide US-based index funds (or it could build its own index fund) or US bonds, etc. Basically: Allow them to invest in the future of the country they’re managing. Don’t limit it to only politicians, either. Let everyone invest if they want.