What does this question mean,Port of Entry into the US?

Question

I have to do a change of address at the immigration office but theres a question that asks,port of entry into the us,and i dkn what it means

Answer 1

how did you enter the U.S.

Answer 2

Are you serious?

I find it hard to dignify this question with an answer, but here goes.

Your port of entry will be one of the following.

If you came by plane, it is the city you landed in,

if you came by sea, it is the sea port your ship let you off in.

If you came by land,it is the point at which you crossed the border.

If you came by any other method, for goodness sake keep quiet about it or you will be deported.