A Supreme Court decision involving Canadian prostitution laws is expected later this morning that deals with whether sex trade workers have the right to hire security and vet their clients for safety reasons.

It's a case that's of particular interest to Ed and Linda Smith, a Regina couple whose daughter was killed 23 years ago after being drawn into a life of prostitution.

The Smiths think tougher laws against johns are needed.

Morning Edition host Sheila Coles spoke with them Friday morning.