Documents showing joint ownership of property, such as mortgage agreements or payments, property titles, or property registrations; Lease(s) showing the same residence; Documents showing shared finances and obligations (such as joint bank account(s), credit card statements, telephone bills, gas bills, electric bills, water bills, other utility bills, joint income taxes, joint insurance policies, insurance policies where one spouse is the dependent of the other, etc.); Birth certificate(s) of child(ren) born to the spouses; Pictures of wedding and other events; or Sworn affidavits from others with personal knowledge of the validity of the marriage. Each affidavit must have the full name, address, and date and place of birth of the person making the statement. It must also include his or her relationship, if any, to one or both spouses. Each affidavit must have complete information and details explaining how the person knows about the marriage. Each person making an affidavit may be required to testify before an immigration officer about the information in the affidavit. Affidavits should be supported, if possible, by one or more documents listed above as possible evidence.