纽约联储前主席比尔·达德利（Bill Dudley）警告称，在过去五年以上未能实现 2% 目标之后，美联储有失去其作为通胀“斗士”公信力的风险。就在新任美联储主席克里斯托弗·沃勒（Christopher Waller）试图说服市场他仍能锚定预期之际，达德利发出了上述警告。
摘要
- 达德利认为，鉴于通胀连续五个多年度高于 2%，美联储作为有效通胀斗士的主张现在“有可能被抹去”。
- 他警告称，如果美联储继续表现得仿佛政策是紧缩的，而按他的看法“根本一点也不紧缩”，那么通胀预期可能会变得“缺乏锚定”。
- 这些评论之际，美联储主席沃勒公开承认：如果通胀和预期短期内没有下转，那么重新加息又回到了议程桌上。
据对达德利近期讲话的报道，这位前纽约联储行长表示，“过去五年最非凡的事情”在于通胀一直稳定地高于目标，但美联储却表现得仿佛已经做得足够，并且可以放心地谈论降息。在更早的一篇专栏文章以及后续的多次采访中，达德利指出，中性利率，或 r*，要比美联储承认的高得多，这意味着实际的政策并不像官员们所声称的那样紧，而且美联储“为打击通胀所做得还不够”。
达德利的核心警告是关于预期，而非着眼于落后数据的情况。他反复告诫，如果美联储官员允许通胀在较长时间里维持在 2% 以上，家庭和市场将开始认为 3--5% 会成为新的常态，从而使得在后续不必施加严重衰退之前更难将通胀拉下去。关于美联储公信力的更广泛研究也呼应了这一担忧：一份 RSM 分析指出，纽约联储衡量的一年期预期已升至约 3.2%，而五年期、五年远期的盈亏平衡水平接近 2.34%，两者之间的差距表明，对 2% 目标的短期信心已出现侵蚀。
沃勒继承的是一个公信力问题，而不仅仅是通胀问题 {#waller-inherits-a-credibility-problem-not-just-an}
Dudley's comments land awkwardly for Christopher Waller, who took over the Fed chair role with a reputation as one of the first officials willing to talk about cuts---only to reverse course as inflation stayed sticky. In a speech in Germany this month, Waller said he can "no longer rule out" voting to raise interest rates again if inflation does not slow, adding that he "would not hesitate" to support a hike if measures of inflation expectations show signs of becoming unanchored.
Those lines read almost like a direct response to Dudley's critique. Dudley and other former officials have warned that cutting too quickly, or leaning on alternative inflation measures to claim victory, would only convince markets the Fed is looking for excuses, undermining its credibility rather than restoring it. One recent commentary noted that using "trimmed mean" or "supercore" metrics to declare the 2% goal achieved "would risk undermining the central bank's credibility," especially after years of missing the headline target.
The deeper issue is that the Fed has managed to irritate both sides of the debate. Critics like Dudley and Kevin Warsh say the central bank is underestimating neutral rates and letting inflation fester, risking a future where expectations slip and a harsher tightening cycle is needed. Others, writing in venues like Forbes, argue the entire idea of the Fed as an "inflation fighter" is a mythology rooted in Phillips Curve thinking, and that the central bank plays at best a peripheral role in actual inflation dynamics.
Why the "inflation fighter" brand matters now {#why-the-inflation-fighter-brand-matters-now}
央行的生死取决于预期，而这正是达德利试图“精准打击”的要害。如果市场、企业和家庭不再相信美联储会在时间上不惜一切代价来维持 2%，工资设定和价格设定行为就会默认把更高的通胀“烘焙”进去，使目标自我否定。
这正是沃勒以自己的方式一直在提示的风险。他强调，维持更长期预期锚定是实现 2% 目标的“关键”，并警告称，如果这些预期发生变化，美联储就必须强有力地回应---哪怕以牺牲短期增长为代价---以挽救其公信力。
支撑达德利警告背后的令人不安的事实是：美联储不再只是“在打通胀”；它还在与一种怀疑作斗争，即它在过去五年中的某个时刻失去了对叙事的控制。沃勒能否恢复这种信任，或是否证实了这些怀疑，将取决的因素，可能不在于他如何谈论 2%，而在于他是否愿意用真正会造成伤害的政策选择来为这一目标背书。
