afe66: If I worked in USA I would earn more than twice what I earn here and I would be taxes less.
You need to also factor in the cost of health insurance and unemployment insurance and road tolls and any other things that are provided in NZ via taxation.
Mind you, I was astounded that some States (e.g. Florida) don't have income tax. Instead, they make their money from property and sales taxes. But you would still get stung for Federal income tax and I'm sure your city or county would also tax you in some way.