[BigGuy22]

Evidence of what? The COLB is only prima facia (meaning at first impression) evidence of the information on it

Yes, that is correct. That means that unless you can show the document to be invalid, his date and place of birth are legally established to be as given on the COLB. That proves that he is at least 35 years of age and American-born. More might be needed for other cases, and if you think more is needed here, the burden is on you to prove it.

[presently no screen name]

can show the document to be invalid

Has the document proven to be valid?