This is known as "dual intent" 回复：使用AP会不会让H1B无效

Q : Can an H-1B alien intend to immigrate permanently to the U.S.?

Yes. An H-1B alien can be the beneficiary of an immigrant visa petition, apply for adjustment of status, or take other steps toward Lawful Permanent Resident status without affecting H-1B status. This is known as "dual intent" and has been recognized in the immigration law since passage of the Immigration Act of 1990. During the time that the application for LPR status is pending, an alien may travel on his or her H-1B visa rather than obtaining advance parole or requesting other advance permission from Immigration to return to the U.S.

Link here

Q : Can an H-1B alien intend to immigrate permanently to the U.S.?

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• 那为什么有的人使用AP后，H4 extension被据了？ -yuan_bai_cai- ♀ (0 bytes) () 07/30/2007 postreply 11:45:29

• are your sure 被据 is due to using AP? ,,,,,,,,,,,,,,,,,,回复：那为什么有的 -MPOS- ♂ (40 bytes) () 07/30/2007 postreply 11:54:58

• 使用AP后，还能H1B transfer吗？ -yuan_bai_cai- ♀ (0 bytes) () 07/30/2007 postreply 11:46:48

• 回复：使用AP后，还能H1B transfer吗？ -知音96691- ♂ (820 bytes) () 07/30/2007 postreply 11:55:13

• maybe you have to ask a lawyer, sorry................回复：使用AP后，还能 -MPOS- ♂ (0 bytes) () 07/30/2007 postreply 11:57:09