The Outside Influence Prevention Act would require that at least half of the funds used for independent political expenditures in congressional races come from contributors living in the state where the money is being spent. The bill modifies federal election law to apply this requirement to political committees that make only independent expenditures, such as Super PACs, when they spend money on House races or races for Delegates or Resident Commissioners. The legislation is designed to reduce the influence of out-of-state money in congressional elections by ensuring that independent political spending is largely funded by local contributors. The bill does not specify any particular funding amounts or implementation timeline beyond requiring compliance with the new sourcing requirement.