I assume there are rules and that a lawyer / prosecutor would need a judge issued warrant to see passenger lists and / or immigration records? (law.stackexchange.com)
I once took a trip to Ellis Island with my son's school and found the ship's manifest of my great grandfather (Umberto) who was the FIRST passenger listed on the ships beautifully hand - written manifest (I picture him aggressively elbowing his way to the front of the line:). (stephaniekrausdesigns.com)
William Shatner, an avid fan of NASA, had his name added to the virtual passenger list for the InSight Lander, and he's narrated a video inviting you to sign up for the ultimate «Hot Ticket.» (digitaltrends.com)