Subject: Re: The Road to MechaHitler
“as secure as it can be”

Plain English. "As secure as it can be" (within the law and funds) is an admission that it can't ever be really secure in the strictest sense (due to the law and funds). Even now it isn't fully secure, but not due to the law, because it's totally impractical. But they've done what they can (within the law and funds) to secure it.