current-users: su and PAM

Subject: su and PAM
To: None <current-users@NetBSD.org>
From: None <sigsegv@rambler.ru>
List: current-users
Date: 03/22/2005 02:54:13

I've just installed base system from netbsd-3 tree and noticed users 
belonging to group 'wheel' can gain root access by running 'su', without 
password prompt.
Is this intentional?