The European Union’s Maastricht criteria, which cap deficits at 3% of GDP, belong in the same category: a measure that could be relaxed as the political pressure changed, but which did help initially in reducing deficits and borrowing costs.
欧盟的马斯特里赫特标准规定，赤字不得超过GDP的3%，也属于类似情况：在政治压力转变以后，此类措施完全可能松懈下来，但最初在削减赤字和借贷成本方面，它们的确功不可没。