Mail PR Card from Canada to USA

Hi All, advise needed. I am asking my friend in Canada to ship my PR card to USA using FedEX. Do we have to fill any customs / border form while mailing? FedEX Canada is saying no need to fill any forms. Please share your experience. Thanks.

Hi, your friend can send ur PR cards to USA with FedEx over night courier…u will get it in 1 day…no need to fill any documents….