I've read a few times in the past that ATF has the "right" to search your home if you have a registered Title II firearm/etc. as a private individual. Two questions:
1. Is it true? Have you somehow given up your 4th amendment rights once you legally own a T2 item?
2. Whether true or not, are there any cases on record where a search of a private residence by ATF was conducted simply due to having possession of a T2 item?