they just kept telling us, oh, no, no, they couldn't conceive of the fact that you can be a wonderful parent, decent human being, and medicate with marijuana. >> a social worker placed the couple's 11-month-old son into protective custody. we wanted to get more insight into their reasoning. but cps, child protective services, won't speak about individual cases. but here's what a spokesman did say they look for. >> is there a danger to the child. is the child being neglected. is there a safety, you know, hazard that could potentially put that child in harm's way. >> and he noted cps policy does not differentiate between medical marijuana and nonmedical use. bridge it studies medical marijuana and its relationship to parenting. >> drug use and drug abuse for years have been looked at as a risk factor for child abuse and neglect, so now you make marijuana more easily accessible, more easily