National politics (Catalonia, etc). But there's also an endemic issue with spending on unnecessary infrastructure while underfunding heavily used infrastructure

National politics (Catalonia, etc). But there's also an endemic issue with spending on unnecessary infrastructure while underfunding heavily used infrastructure (such as public transportation in large cities); our budgets never seem to be able to reduce debt, and our pension system is doomed to explode, because eventually there will be more retired than working people.