回复：回复：通常I-140应该是HR -- 学校的人事部门签字，I-485是你自

(1)Can my boss sign on my permanent employment letter and I-140 both, he has the title as office director at university.

(2)he is the one hire me and use his fund support me. and I will send my application in using my home addess not school office address? Thanks.