One time I was sleeping and I heard my door bell rang. When I got down there, there was 2 fbi agents. As soon as I got down there, he showed me the bad and said something regarding comming into my house. they didn't ask can or may they go into my house they just said we need to go into your house. They were investigating my neighbors and asking question about my neighors, which i don't know much about. I don't nosey in other people's business.
here are my questions:
1. To my understanding nobody can enter my house without my permission.
2. do I have to answer their questions?
3. what can they do if I don't answer their questions? can say, I have nothing to say and just walk away and go back to sleep? what if they keep on banging on my door and keep ringing my door bell.?