eb=employment-based, fb=family-based Form I-485, Application to Register Permanent Residence or to Adjust Status: If you depart the U.S. while your Form I-485 is pending without first obtaining advance parole, USCIS will deny your case unless you fit into a narrow exception for people with certain nonimmigrant statuses. 出处https://www.uscis.gov/travel-documents google uscis processing time就会告诉你https://egov.uscis.gov/processing- times/的网页,自己查吧
【在 c*****y 的大作中提到】 : 谢谢。对这些简称不太了解。 : 是申请的I130亲属移民。寄到 Chicago center. : nsc是Nebraska Service Center么? : fb是什么?