We just had a huge battle where Republicans opposed Medicaid expansion in states. (Which would involve more blue state federal tax dollars going to red states.)

There are a couple of areas where Republicans support federal preemption, such as telecommunications (which falls squarely under even a narrow definition of the commerce clause, as “channels of interstate commerce”). But for the most part they fight federal encroachment in environmental laws (regulating infra-state bodies of water), health spending, etc.

When have Republicans had the federal government intervene to stop a domestic transit or health program that wasn’t reliant on federal dollars?