I just got ITA for express entry. I have some questions about police certificate. Does the certificate I got from my home country have a valid time? I left my home country at 2015 and I have applied one police certificate for applying for the visa come to Canada. Until now I have never been back and live at my home country for more than 2 month. Can I still use the police certificate I have at hand to apply for PR or do I need to apply for a new certificate.