When I made a rollover of my Roth IRA, the bank withheld a $20 fee, so the rollover into the new account was $20 short. What can I do?

Check with your new financial institution to see whether it offers fee reimbursement (some do). You may add the $20 out of pocket to complete the rollover amount, but this must be done within 60 days of the transfer. You cannot deduct the $20 fee.