We have a difference of opinion in our bank on getting all parties of a CD to sign the assignment. Some say that only one signature is required, others say that all the parties need to sign. Which way is correct? Also, if one signature is all that is required, what happens if that person dies with the CD account having right of survivor-ship?

This is a State law issue. In Texas, if all parties do not sign, you have to send them a registered letter informing them of the security interest.

PROBATE CODE
CHAPTER XI. NONTESTAMENTARY TRANSFERS
PART 1. MULTIPLE-PARTY ACCOUNTS
§ 442. RIGHTS OF CREDITORS; PLEDGE OF ACCOUNT.