> “The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things ...
Note it says "the people" and not "citizens of the United States". Everyone has this protection within U.S. borders, SCOTUS has ruled to this effect.
So the government forcing yet more private companies to do their unconstitutional bidding seems like something that should b opposed. I believe banks being required to collect KYC came about through The Patriot Act. If this trend continues, you'll need to verify your identity to use any service.