感谢8老师关于交移民体检表问题的回复，再问 8老师有关sealed envelop 交给谁的问题…

My brother tried to submit the sealed envelope to the IO at the port of entry in San Jose Airport, California.  But the IO there did not take it.  IO told my brother to mail it himself, but did not say where/who he should send it to.  Could you please help? Thanks.