還強
The "U" for EB3 in visa bulletin means no more visa number for EB3. In another word, a EB3 can not file 485 now although his 140 was approved since there is not an immediately available visa number for him.
有點研究精神好不好,USCIS original answers還是值得認真看的
http://uscis.gov/graphics/howdoi/immvisa.htm