In the US, control over social policy is delegated to the states, allowing local legislatures to tailor programs to local tastes and use resources efficiently. But those local policies are still subject to federal oversight.
在美国，对社会政策的控制下放给了各州，地方立法可以根据本地情况量体裁衣，高效地使用资源。但这些地方政策仍要受到联邦监督的制约。联邦政府会在&mdash;&mdash;也有能力在&mdash;&mdash;（比如）公民自由被侵犯时介入干预。