[zaroth]

There was a case, I can't remember the specifics, of a drug bust where there was more than one person in the house, the person charged did not want the police to come in, but someone else ended up letting them in. The search was contested as unlawful, but I'm not sure how it turned out...

Edit: Here it is, as long as they arrest the disagreeing party and remove them from the home, the Supreme court ruled the arrested party can no longer object to the search, and in that case they don't need a warrant. So I think the racket is they claim exigent circumstances to enter, arrest you, and then perform the search.

http://thefreethoughtproject.com/supreme-court-rules-cops-wa...