This is analogous to a situation occurring within the banking system. Almost three months after water stains first appeared in the overnight funding markets, the Fed has stepped in on a daily basis to "re-paint the ceiling" and the problem has appeared to vanish. Yet, every day the stain reappears and the Fed's work begins anew. One is left to wonder why the leak hasn't been fixed.
In mid-September, evidence of issues in the U.S. banking system began to appear. The problem occurred in the overnight funding markets which serve as one of the most important components of a well-functioning financial and economic system. It is also a market that few investors follow and even fewer understand. At that time, interest rates in the normally boring repo market suddenly spiked higher with intra-day rates surpassing a whopping 8%. The difference between the 8% repo rate recorded on September 16, 2019 and Treasuries was an eight standard deviation event. Statistically, such an event should occur once every three billion years.
For a refresher on the details of those events, we suggest reading our article from September 25, 2019, entitled Who Could Have Known: What The Repo Fiasco Entails.