It did not fail to escape the attention of commentators that the US Federal Aviation Authority was amongst the last aviation regulators to issue an order grounding the 737 MAX.
Is there evidence to show that this is a pattern - that US, European, Russian (or other) regulators tend to be slower to issue orders or directives that concern aircraft made by manufacturers within their own country or bloc?
What would count as an answer
"Evidence" in this case would be based on figures showing time to respond by different agencies in multiple cases (enough to indicate a pattern).
What does not count as an answer
I am not asking for opinions on whether the FAA or EASA or other agencies are politically sensitive (I am sure they are).
Though I am willing to bet that it will turn out to be the case that agencies tend to be slower to act when it would affect interests that are closer to home, I don't need to read speculation about why; I don't think it will be any more illuminating than the interminable exchanges about how Airbuses are better than Boeings or vice-versa.
Similarly, although questions have been raised and concerns expressed about the FAA's inspection regime and the degree to which it allowed Boeing to self-certify aircraft, that (and the regimes and processes of other regulators) is not the question here.
I should have guessed that this would quickly descend into ra-ra declarations about superior American pilots and ways, backward and corrupt non-western political systems, and so on. I wouldn't want to deny anyone their fun, but it's exactly what is not an answer to the question.