A contract can be a subsidy, depending on how it was awarded. Nationality restrictions can be justified for the SpaceX launch contracts (classified payloads), but nationality restrictions on rail cars would fall into the "subsidy" camp.
A contract can be a subsidy, depending on how it was awarded. Nationality restrictions can be justified for the SpaceX launch contracts (classified payloads), but nationality restrictions on rail cars would fall into the "subsidy" camp.