Range.Paste (Word)

Inserts the contents of the Clipboard at the specified range.

If you don't want to replace the contents of the range, use the Collapse method before using this method. When you use this method with a Range object, the range expands to include the contents of the Clipboard.

If ActiveDocument.Tables.Count >= 1 Then 
 ActiveDocument.Tables(1).Range.Copy 
 Documents.Add.Content.Paste 
End If