They should have asked to photocopy the passport + visa for their records.

And international students will have passports with visas. 

I'd make a photocopy of the student's driver's license or passport, and I told them that this is a contract between me and them and if they break the contract, it would be them getting sued, that they were responsible as an adult with no parents involved. 

Make sure to completely vet all showings social media, copy of birth certificate, drivers license, passport, blood sample, medical records, geneology report.Then be sure to record all conversations, make a journal of your thoughts and impressions of every interaction, be sure to have multiple go-pro cameras on your person, like attached to a helmet or body rig.

FYI - I have a USA passport so no issues with being an overseas investor.

You may not be able to transfer / turn on water until after you have closed on your home.11You should do a “Final Walk Through” of the property you are purchasing within 24 hours before closing to confirm the property is in the same condition that it was in when you agreed to purchase the property and that all inspection required repairs have been completed.12On the day of closing, all signers will need to bring their driver’s license or Passport and a Cashiers Check in the amount you are required to bring to closing.

What is required is a valid passport.  

It would seem easier to setup profitable events locally than trying to get people to update their passport to attend one. 

I'm in cash right now except for my primary UK home so I have no regional axe to grind.Separately, about entering Sweden, not sure when you plan that but currently EU is closed to USA arrivals unless you have a EU passport.

Can I show my passport of my country (MX)?