To simply exclude communications from the coverage of FISA and allow secret wiretapping without a warrant would be a clear violation of the 4th Amendment.

It's only with that kind of full accounting that you can have any assurance that the practice has stopped and will be prevented.

If the Pentagon has been collecting information improperly on Americans, it should provide a full accounting of what kind of information it collected, on whom and why, subject only perhaps to protecting the privacy of individuals.