Jack of Harts

Imagine an America where citizens of a congressional district were the only people allowed to donate money to a Federal election campaign in that district. House District. State Senate seat. The Presidency. It is already illegal to accept funds from people outside the nation. What would it be like if you could not accept funding from outside your district? No National Party funds devoted to individual House or Senate seats. No companies in New York State funding campaigns in Iowa. Only citizens of the district in question could donate. So all campaigns would be funded from within the district they are representing. How would that change the way districts and States are represented in the Federal government? Do you approve or disapprove of the idea? And why?