A couple of other things you may want to know. If your brother is on probation, did you know that his probation officer and the police can show up at your place and search your house without a warrant? And do you have receipts for any major items in your house, especially TV's, VCR's, and stereos? If he is busted again you can bet the police will want to look at most of the stuff in your house. Proof that it is yours is recommended.
And I forgot, if your brother was convicted of a felony, he cannot have anything to do with guns, including living in a house that has guns. If you have any, it would be best to remove them from the house. They could be siezed if one of those unannounced visits from his probation officer was to happen.