Was it possible to lead earlier and make the results less bad?
Only if ALL the early arrivals were caught and tightly quarantined AND all of their contacts in the US traced and strictly quarantined AND all of their contacts, etc.
The first guy from China who brought the disease into Snohomish County was well when he got off the plane, but fell ill five day later. The asymptomatic contagion makes contact tracing almost impossible.
It might have delayed the onset of rapid growth, the the exponential growth phase would have occurred no matter what.
Apple and Google are developing a solution using cell phones to do anonymous contact tracing. You would get a alert that you have been exposed to a COVID patient. But it is going to really raise the hackles on people who value privacy.
With such long-term government idiots leading us, no.