“American” is not a race. It’s a nationality. It’d be better to not answer than to write in a dumb answer, especially if you don’t intend to answer all the questions. If your intent is to provide only what is constitutionally allowable, then nothing except the number of people living there should be answered. You’re just looking for trouble if you’re inconsistent.
The object is to mess with their evil statistics.
Keep in mind that they view YOU as evil for not complying. If you give them the means to come after you, they may do it, and they have the power. You don’t. Don’t tempt fate and put yourself in the position of having to pay a lawyer to defend to. You probably have a job and family. You need the money for them, not to pay out to lawyers just to be a tiny voice protesting against Goliath.
Just answer the total household headcount, nothing more.
Pick more important battles.