During past 4 yrs he had credit cards ( which were issued by some institutions basically with just details of his Name, Date of Birth and Home Address) seems he hasnt provided them with his Social Number (SSN/SIN) at that time to obtain credit card.

And he moved out of the country last year and is planning to return back to canada this year since he has got his Permanent Residency their.

Now the question is, can he again apply Fresh/New Credit Cards again with his new SSN/SIN number and re-eastablish his credit History??

or if he applies, is he liable to pay the old dues first before getting a new credit card??