I'm no tax advisor, and the situation with the US tax code is pretty horrendous, but looking at Section 965 it shouldn't be too painful if you don't already have any established foreign corporate presence. If you were considering being self-employed the situation could be worse if you're not operating under the construct of an LLC.
What you definitely want to ask your tax advisor about is hazards with the PFIC (Passive Foreign Investment Company), Form 8621, which can affect your filing and tax liability in the US if you have any "passive foreign investments," which could be as simple as a Kiwisaver or other PIE. It's a massively costly and time consuming pain.
But, again, I'm not a tax advisor.
