pochfaye0704 said:
just want to ask:
What do they do in the BACKGROUND CHECK?
Largely, they look in computer databases. They have access to quite a few of them, and will do a search by name and approximate birthdate. If anything comes up (or looks odd), they can call the police departments in question and ask them. If appropriate, records can be requested from courts. There are also (depending on the country) risk-based metrics for people, as well as databases used for investigations. For example, if your name and address was associated with smuggling by Canada Post and turned over to an investigator, they can potentially see that.
They can also look at records associated with your passport (generally by number). Depending on the country of origin and destination and their level of access, they may be able to see some or all of your entries and exits to various countries. If the dates don't match up, you're going to have a bad time.
Largely, for people outside the US and Canada, they rely on looking at the police certificate to see if it looks good. For people in the US and Canada, there is much more information available.