Re: Unlawful search & seizure?
For the federal guidelines as self-published, see http://www.fbi.gov/publications/leb/2002/may2002/may2002.htm#page_26 for the basics on "Consent Searches." These kinds of searches are also called "Talk & Knock" by law enforcement. Traffic stops (Terry stops) are also situations in which consent to search can be legally denied. It is easy for many to defer to the badge and the "Command Voice" when in fact it may be wiser to defend and preserve whole your privacy and other's right to their own. If enough people make an example of questioning and resisting unreasonable requests, then the officers and agents will have to adjust. We are the people; we are not sheep.