In the case of a K-1, it is assumed you will transition from a temporary nonimmigrant status to a permanent status. [1] Requiring folks to move to the U.S., and then go back out of the country to get a green card, only to return again, is absurd. That absurd dance for both K1 and H1 w/dual intents is the reason the laws and guidance provided to agents changed starting in the 50's through the 90's. These changes in guidance to agents are nothing more than a thinly veiled attempt to suppress people coming to the U.S. lawfully, which is absurd and deeply anti-American.
[1] https://www.uscis.gov/family/family-of-us-citizens/visas-for...
People who come here on a K1 get permanent residency once they get married through a different statutory route: 8 USC 1154. But that has nothing to with the K1 itself. That route is available to anyone married to a US citizen, including illegal immigrants under certain conditions, or aliens who get married abroad. The K1 visa isn’t a stepping stone to permanent status. It’s just a convenience that allows people to have the wedding in the U.S. instead of the spouse’s home country.
The UCIS explicitly links the K-1 (which has the words temporary and non-immigrant visa scattered throughout) to a de facto path to permanent status (see below). The fact that the two are different statutes is moving the goal posts (i.e., a logical fallacy). The government clearly sees them as a linked pathway to permanent status.
> "If you are a U.S. citizen who wants to bring your foreign fiancé(e) to the United States in order to get married"
https://www.uscis.gov/family/family-of-us-citizens/visas-for...
> The K1 visa isn’t a stepping stone to permanent status. It’s just a convenience that allows people to have the wedding in the U.S. instead of the spouse’s home country.
There's a reason they require a medical exam to be filed with the consulate as a part of the K-1 application, they expect you to be in the U.S. for a long time. K style visas are a lot more than a convenience, they are the law of the land and have been so for nearly 75 years.
How is it “delusional” to interpret a law that’s plastered with the words “non immigrant” and “temporary” and say that maybe it shouldn’t be a de facto path to permanent residency?