It does seem to be falling in Washington state. We had our first patient on January 20 the same as South Korea and they also seem to be falling.
Hopefully it will fall throughout the nation. I don’t think anyplace will replicate our nursing home deaths which apparently were caused by patient zero who returned here from Wuhan.
The ‘social distancing’ in SK really reduced their incoming cases a lot.
IIRC they closed schools, big venues and told anyone who tested positive or was a contact of someone who tested positive to sit their a@@es at home.