DC to Boston is about the same as South Korea - no excuse for not being able to do what SK did with developing/deploying tests, despite all your silly posts to the contrary. We utterly failed having testing available anywhere, which is independent of the size of the US.
With regard to having "data" on symptomatic people presenting at doctor's offices and hospitals, I've already posted about that via the ILI (influenza like illnesses) reports, which were way up in our area starting in the beginning of March (first link), plus there have been numerous studies estimating the NYC had >10,000 cases by the end of February (and NENJ probably had a similar amount and some estimates are much greater), and finally, as per the 2nd link, a paper was just published showing that COVID was growing unknown to anyone in Jan/Feb in Seattle (based on COVID testing of retained "flu" samples that were negative for flu), so it's also quite likely the same was going on in this area.
So certainly by late February, there were many symptomatic cases walking around, but no tests for any of them before early March and still <1000 tests/day by mid-March. It seems nearly certain that if we had tests available by late February, we'd have been finding cases by then and probably would've easily had a few hundred cases by early March, if only we had had testing capability in place.
https://www.healio.com/news/infecti...new-york-were-preceded-by-uptick-in-flu-cases
https://www.thelancet.com/action/showPdf?pii=S2589-5370(20)30223-6
https://www.nytimes.com/2020/04/23/us/coronavirus-early-outbreaks-cities.html
With regard to shutting things down, the biggest reason California likely started with earlier shutdowns is they had more cases and deaths through early March and into mid-March vs. New York. As of 3/4, CA had 53 cases and 1 death, while NY had 3 cases and zero deaths and it wasn't until 3/12 that NY had more cases than CA (328 to 237), but at that point CA had 4 deaths, while NY had none. NY finally passed CA in deaths on 3/15. So, it's not a surprise that CA closed schools on 3/13, while NY did that a few days later on 3/16, when bars/restaurants were also shut down.
Yes, CA's "formal" shutdown order came on 3/17 vs. 3/22 for NY (due to bickering between BDB and Cuomo, which was unfortunate and the formal shutdown shouldn't have taken that long), but both states were effectively closed up by around 3/16, by which time NY's cases had ballooned very quickly to ~3X those in CA (1374 to 392), as NY (and NJ) was unknowingly in the midst of an incredible exponential growth phase unlike any seen during this pandemic - just a week later, on 3/23, NY had over 25K cases, while CA had just 1700 (15X). I believe that if NY (and NJ) had SK's 10,000 test/day capability by late February, we would've seen the 3/16-style case numbers by early March and potentially might have shut down 2 weeks earlier or at least 1 week earlier, saving perhaps ~50% (1 week earlier) to ~80% (2 weeks earlier) of the lives lost.
https://abc7news.com/feature/health...-to-becoming-a-new-york-level-crisis/6108354/
Not sure what your point is about Fauci - it's all in the article. Everyone in the field knew there was the potential for asymptomatic transmission going on by early February, based on the study cited, but it took a few more weeks to get a robust set of data showing that was likely going on (including data from the Diamond Princess and elsewhere). Also, while I think Fauci and our political leaders (federal and state) should've sounded stronger alarms, it's also unrealistic to think Fauci should've been screaming to shut down the country with <75 cases and zero deaths on 3/1? Hmmmm, maybe if we had had robust testing in place and seen hundreds of cases by 3/1, perhaps things would've played out differently.