What would be an example of a government policy on which the costs outweigh the benefits?

An example of a government policy where the costs might outweigh the benefits is implementing extensive subsidies for fossil fuel industries. While this policy could support job creation and lower energy costs in the short term, it often leads to significant environmental damage, contributes to climate change, and drains public resources that could be better spent on renewable energy initiatives. The long-term health and environmental costs may far exceed the immediate economic benefits, making it a questionable investment for society.