Police certificates from USA?

#1
Good evening guys,
i'm just getting ready to mail the application to Buffalo office for permanent residence in Canada, i have all the documents except the police certificates from my native country and FBI.
the question is, is CIC going to accept the application without the police certificates, or just returned back to me?
i know they are only good for 6 months and they will ask again for new ones anyway later on, correct?
cheers.
 
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