You have to think about what "dual intent" actually means. The relevant provision is 8 USC 1184(h):
> (h) Intention to abandon foreign residence
> The fact that an alien is the beneficiary of an application for a preference status filed under section 1154 of this title or has otherwise sought permanent residence in the United States shall not constitute evidence of an intention to abandon a foreign residence for purposes of obtaining a visa as a nonimmigrant described in subparagraph (H)(i)(b) or (c), (L), or (V) of section 1101(a)(15) of this title or otherwise obtaining or maintaining the status of a nonimmigrant described in such subparagraph, if the alien had obtained a change of status under section 1258 of this title to a classification as such a nonimmigrant before the alien's most recent departure from the United States.
What does the text in italics mean? It's there because having an intention to abandon your foreign residence makes you ineligible for a nonimmigrant visa, including H1B. All 1184(h) says is that a petition for permanent residency cannot by itself be used as "evidence of an intention to abandon a foreign residence" for purposes of renewing your H1 visa.
That's all "dual intent" means. It's a fiction where you can keep saying "I intend to go back home after my temporary work in the U.S."--which remains a fundamental requirement of H1B status--and the government can't point to a permanent residency petition as evidence that you are intending to stay in the U.S. permanently. The law doesn't give the H1B holder any right or expectation of being granted permanent status.
The law does have immigrant visas for people who can come here and say "I want to work here and seek permanent residency. I'm not intending to go back." H1B isn't like that.
> The law does have immigrant visas for people who can come here and say "I want to work here and seek permanent residency. I'm not intending to go back." H1B isn't like that.
you are, obviously, interpreting the law to fit your narrative:
""The fact that an alien is the beneficiary of an application for a preference status filed under section 1154 of this title or has otherwise sought permanent residence in the United States shall not constitute evidence of an intention to abandon a foreign residence for purposes of obtaining a visa as a nonimmigrant described in subparagraph (H)(i)(b) or (c), (L), or (V) of section 1101(a)(15) of this title or otherwise obtaining or maintaining the status of a nonimmigrant described in such subparagraph"
All this means is that you, indeed, can be dual intent and apply for permanent residency while holding a H-1B, like generations of Americans have done before ourselves.
> (h) Intention to abandon foreign residence > The fact that an alien is the beneficiary of an application for a preference status filed under section 1154 of this title or has otherwise sought permanent residence in the United States shall not constitute evidence of an intention to abandon a foreign residence for purposes of obtaining a visa as a nonimmigrant described in subparagraph (H)(i)(b) or (c), (L), or (V) of section 1101(a)(15) of this title or otherwise obtaining or maintaining the status of a nonimmigrant described in such subparagraph, if the alien had obtained a change of status under section 1258 of this title to a classification as such a nonimmigrant before the alien's most recent departure from the United States.
What does the text in italics mean? It's there because having an intention to abandon your foreign residence makes you ineligible for a nonimmigrant visa, including H1B. All 1184(h) says is that a petition for permanent residency cannot by itself be used as "evidence of an intention to abandon a foreign residence" for purposes of renewing your H1 visa.
That's all "dual intent" means. It's a fiction where you can keep saying "I intend to go back home after my temporary work in the U.S."--which remains a fundamental requirement of H1B status--and the government can't point to a permanent residency petition as evidence that you are intending to stay in the U.S. permanently. The law doesn't give the H1B holder any right or expectation of being granted permanent status.
The law does have immigrant visas for people who can come here and say "I want to work here and seek permanent residency. I'm not intending to go back." H1B isn't like that.