Endpoint encryption Removeable media

The current release of removeable media does not allow a user to take a USB drive to a non SEE equiped machine, open the files on the machine and then save it back encryped to the usb drive.  Once the file is opened it can only be saved unencrypted. This then allows confidential data to be compromised.  Please add encrypting data on USB drives  for all data rewritten to a drive.