In principle, a free trade deal between the US and the P4 countries (NZ, Chile, Singapore, and Brunei) is a good thing.
If we want our world’s limited resources to be used efficiently, we should not place artificial barriers in the way of trade without good reason. But we must make sure that the FTA doesn’t throw out the baby with the bathwater. We must insist on protecting labour and environmental standards in the FTA (which should be less of an issue dealing with the US than it was in the China deal). We must also not give up our right to buy medicine collectively via Pharmac, which allows us to get much better value for limited funds than would otherwise be the case. The worry is that the US will demand open access to our pharmaceutical market in exchange for freer access to their food markets.
It is a real victory for New Zealand diplomacy that we have managed to get this far but the devil will be in the detail.