I predict that at some time in the future you will see people arrested for taking pictures of their kids in the tub or one of those cute bare butt pictures that we all have hanging on a wall somewhere. And don't tell me that it won't happen because the system will weed them out, it won't. It will prosecute them. Just look at what a mad-dog prosecutor can do by taking a look at the Scooter Libby trial. There's a 16 and 17 year old boy and girl in Florida who were prosecuted and convicted for taking pictures of themselves, not anyone else, themselves. The Florida Appellate court upheld the conviction. As the Chinese say, be careful what you wish for, you just might get it.
My guess is that you don't know what child porn is or what it does to children. Taking innocent pictures of children in bathtubs isn't what child porn is about. Raping children, them crying out "daddy stop", bondage deplictions, etc...that isn't a bathtub photo. If you'd like to keep child porn a misd. in MD then let your children be the victims. Or maybe you think that it's ok to take a picture of a baby being raped? You have to be very sick to want to keep child porn a misd. in MD.