New Zealand is about the size of Colorado with 80% of the country being uninhabited. The United States is 3,500% larger than NZ and only around 50% of the US is uninhabited. Most of that being Alaska.
NZ has been able to control the virus because they are a country of two beautiful, tiny islands and 500 even tinier islands. There are very few densely populated areas which has allowed them to test citizens at a high percentage and they have established fenced in quarantine facilities for anyone entering the country.
Great policies, not possible here.
Absorb all that and then add in that Taiwan is 5 times smaller than New Zealand.
There's no way to realistically believe we could attack this the same way. We're fighting the same enemy but we're in a much, much larger and more complicated battle.
EDIT: On a related but lighter note:
A man in his 50s absconded from a New Zealand coronavirus quarantine facility, cutting through a fence to visit a liquor store, officials revealed on Friday.
www.cnn.com