Check/Money order for n-400 fee

Yes. Infact personal check is a preferred mode of payment on this forum, because you can easily know when it was cashed by USCIS.
 
I am not sure if the mutual fund money market check is OK or not.
If you are not sure either, just do not use the mutual fund money
market check. Use your regular bank checking account check
 
I am not sure if the mutual fund money market check is OK or not.

If your mutual fund money market account has checking account privileges, then checks drawn from it are valid.

Btw, mutual fund money market was never part of OP's original question.
 
Top