所谓Dual Intent就是允许你在维持非移民身份的情况下，有移民倾向。允许有Dual
Intent的签证包括有H1b, H1c, L1, O1。
H1期间，如果申请了485，出境之后，还可以用H1回来。当然，你也可以用AP，你的H1
arguably 仍然有效。O1，如果已经递交了485，就一定要用AP重新入境。
相关条款：
DUAL INTENT: H1B or H1C
8 CFR § 214.2(h)(16): Effect of approval of a permanent labor certification
or filing of a preference petition on H classification—
(i) H- 1B or H-1C classification . The approval of a permanent labor
certification or the filing of a preference petition for an alien shall not
be a basis for denying an H-1C or H-1B petition or a request to extend
such a petition, or the alien's admission, change of status, or extension of
stay. The alien may legitimately come to the United States for a temporary
period as an H-1C or H-1B nonimmigrant and depart voluntarily at the end of
his or her authorized stay and, at the same time, lawfully seek to become a
permanent resident of the United States.
DUAL INTENT NOT ALLOWED IN H-2A, H-2B AND H-3
8 CFR § 214.2(h)(16): Effect of approval of a permanent labor certification
or filing of a preference petition on H classification—
(ii) H-2A, H-2B, and H-3 classification. The approval of a permanent labor
certification, or the filing of a preference petition for an alien currently
employed by or in a training position with the same petitioner, shall be a
reason, by itself, to deny the alien's extension of stay.
DUAL INTENT: L1
8 CFR § 214.2(l)(16): Effect of filing an application for or approval of a
permanent labor certification, preference petition, or filing of an
application for adjustment of status on L-1 classification . An alien may
legitimately come to the United States for a temporary period as an L-1
nonimmigrant and, at the same time, lawfully seek to become a permanent
resident of the United States provided he or she intends to depart
voluntarily at the end of his or her authorized stay. The filing of an
application for or approval of a permanent labor certification, an immigrant
visa preference petition, or the filing of an application of readjustment
of status for an L-1 nonimmigrant shall not be the basis for denying:
1）An L-1 petition filed on behalf of the alien,
2）A request to extend an L-1 petition which had previously been filed on
behalf of the alien;
3）An application for admission as an L-1 nonimmigrant by the alien, or as
an L-2 nonimmigrant by the spouse or child of such alien;
4）An application for change of status to H-1 or L-2 nonimmigrant filed by
the alien, or to H-1, H-4, or L-1 status filed by the L-2 spouse or child of
such alien;
5）An application for change of status to H-4 nonimmigrant filed by the L-1
nonimmigrant, if his or her spouse has been approved for classification as
an H-1; or
6）An application for extension of stay filed by the alien, or by the L-2
spouse or child of such alien.
DUAL INTENT： O1
8 CFR § 214.2(o)(13): Effect of approval of a permanent labor certification
or filing of preference petition on O classification . The approval of a
permanent labor certification or the filing of a preference petition for an
alien shall not be a basis for denying an O-1 petition, a request to extend
such a petition, or the alien’s application for admission, change of status
, or extension of stay. The alien may legitimately come to the United
States for a temporary period as an O-1 nonimmigrant and depart voluntarily
at the end of his or her authorized stay and, at the same time, lawfully
seek to become a permanent resident of the United States
