New Zealand is a small country way out in the middle of the South Pacific Ocean 2.5K miles (or over 4K kilometers) away from its nearest neighbor and with a population smaller than NYC. The United States is 50 stubborn ass States plus the Fed’s occupation in southern Maryland. The Reserve Bank of New Zealand has an address in Wellington, is owned by the New Zealand government and answerable to Parliament. The Federal Reserve system isn’t even a single bank with a single board of directors, isn’t wholly owned by the US Government and isn’t directly answerable to Congress.
There’s no easy way to make a lazy comparison between us and have it be convincing. Parts of the Federal Government would likely love to see the United States become a cashless society but they don’t always get what they want.