It appears US is better than Indonesia in reporting, but worse than Singapore, according to their preprint [1].

AFAIK, the coronavirus test is not being conducted for people who have no history of visiting China or traveling outside, and the virus can be transmitted before symptoms could appear. Based on the article, it is conceivable that the virus could soon be found from a person who has no travel history outside US, but only when the person gets dangerously sick.

[1] https://www.medrxiv.org/content/10.1101/2020.02.04.20020495v...