Delete Columns From All Sheets Based On Condition In X Workbooks

I am sure this is a very simple questions. I am using the below code to work on the worksheets on a workbook called "MF BANK EXPOSURE SUMMARY.xls" so far the code that I am using is:

Sub Commandbutton2()
Dim iCol As Long
Dim Isheet As Long
Dim Item As Worksheet
Set MFBANK = Workbooks("MF BANK EXPOSURE SUMMARY.xls")
For Each Item In MFBANK.Worksheets
With Item. Range("A1:T65536")
For iCol = .Column + .Columns.Count - 1 To 1 Step -1
If IsEmpty(.Cells(65536, iCol)) And IsEmpty(.Cells(1, iCol)) Then
If .Cells(65536, iCol).End(xlUp).Row = 1 Then .Columns(iCol).Delete
End If

Next iCol
End With
Next Item

End Sub

I would like to extend the code so that it works on the worksheets of two workbooks at the same time the one being the "MF BANK EXPOSURE SUMMARY.xls" and the other being "MF CP EXPOSURE SUMMARY.xls" .