Can an attorney have a client sign a document and then ask the notray to notarize that document if he signs an affidavit stating that he witnessed the signature?

Yes, an attorney can have a client sign a document and then request a notary to notarize it, provided that the notary is not a party to the document and can verify the identity of the signer. However, the notary's role is to confirm that the signer is who they claim to be, not to witness the signature. If the attorney signs an affidavit stating that they witnessed the signature, it may create a conflict of interest, as the notary should remain impartial and not be involved in the transaction. It’s advisable to follow proper guidelines to avoid any ethical issues.