I have been placed several times into the position of having something that was illegal simply because while I had acquired an object legally, a law was subsequently passed making that object a crime to own.
I believe in 4th Amendment guarantee to security in my property, house, person and effects from unreasonable search and seizure as well as 5th Amendment protection against deprivation of life, liberty and property without due process. If what I own does not injure anyone else and I acquired it legally, I don't believe it is anyone's business what I have. Further, I believe that simply passing a law against something because the majority of people voting on it don't like it does not constitute due process, especially if I previously acquired that item legally.
Sheesh! When are people in this country going to learn to mind their own business!