这个所谓的national plan 还是sponsored by New Hampshire

Depending on your state of residence, a Fidelity-managed, state-specific plan may be a good option for you. If Fidelity does not manage a plan for your state, you may want to consider our national plan, the UNIQUE College Investing Plan (sponsored by the state of New Hampshire).

如果你所住的州有自己的plan，而且投资529有州税上的优惠，当然是选自己州的，否则， 随便选任何一个州的plan 都能达到同样的目的。