Originally Posted by
catocony
An address is irrelevent for US citizens since we cannot be denied re-entry into the US. It doesn't matter where we plan to go after we clear immigration and customs. It's in there for visitors since the idea is that if you don't know where you're staying, at least for the 1st night, then you might be planning on staying illegally once in.
Requiring the address of all incoming travelers has little to do with admissibility. The CBP needs the address in case a traveler has to be contacted thereafter for any reason.