H-1B 的困惑

我是新手上路，關於H-1B 回國大家都說需要簽證，我在USCIS網頁上看到如下回答，也沒說用簽證呀。另外，此中國護照和加拿大護照對H-1B有何區別嗎？多謝解惑！！

Can an H-1B alien travel outside the U.S.?

Yes. An H-1B visa allows an alien holding that status to reenter the U.S. during the validity period of the visa and approved petition.

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.

所有跟帖： 

• validity period of the visa -sqgs- ♂ (180 bytes) () 02/14/2006 postreply 10:34:46

• 回複：validity period of the visa -也是新手上路- ♀ (266 bytes) () 02/14/2006 postreply 10:41:11

• 回複：回複：validity period of the visa -sqgs- ♂ (616 bytes) () 02/14/2006 postreply 11:14:10

• 回複：回複：回複：validity period of the visa -也是新手上路- ♀ (416 bytes) () 02/14/2006 postreply 11:26:01

• 回複：回複：回複：回複：validity period of the visa -sqgs- ♂ (448 bytes) () 02/14/2006 postreply 12:10:10

• 回複：H-1B 的困惑 -NewDiverUS- ♂ (252 bytes) () 02/14/2006 postreply 12:19:54

• 回複：H-1B 的困惑 -123223323423- ♀ (110 bytes) () 02/14/2006 postreply 13:05:46

• 回複：H-1B 的困惑 -oldoldtree- ♂ (221 bytes) () 02/14/2006 postreply 21:47:53