If they had a warrant, or if they have personal knowledge (see or hear) of something illegal inside. Smell counts too but is more difficult to pin down, you should always answer them outside and shut the door behind you. Also, if they do search your house without a warrant and can't find anything illegal, that is considered an illegal search and you can press charges if you feel it necessary.
It depends on where your name is. The police could suspect you committed a crime, and are attempting to find evidence of that. You could be the police officer that applied or you could be the judge that signed it.
It depends. Warrents allow the police to search something or someone without question (the person cannot refuse the search), so it is good for police. If you happen to be hiding something from the police, then it could be bad for you. It means the police will be able to find whatever you are hiding and you won't be able to say "no, don't search me."
Well, honey, if the police don't follow procedures, it's like a recipe for disaster. Evidence could be thrown out, cases could be dismissed, and lawsuits could be flying left and right. Basically, it's a hot mess that nobody wants to clean up.
To come into a home the police need a search warrant to search. Without the warrant the evidence is not admissible in court. It would be an illegal search.
Following website has list of countries and under them are procedures which could help you out. Website : www.wikiprocedure.com
It could be one. There are search warrants and arrest warrants. If you have a search warrant, the police are entitled to search your property. After executing the search warrant, if the police establish probable cause to believe that you committed a crime, they can arrest you. If you have an arrest warrant, it is only a matter of time before the police find you and execute the arrest warrant.
In general, the police can search your roommate's room without their permission if they have a valid search warrant or if there are exigent circumstances, such as the presence of evidence that could be destroyed or a threat to public safety. It is important to know your rights and consult with a legal professional if you have concerns about a search.
They can if there is probable cause and that they could be an accessory to a crime.
registration and insurance
No, they cannot search you without good reason (which could be things like not walking straight) or your permission.
If the probation officer is conducting the search then he must be there for it. Every state has its own procedures for conducting searches on their probation clients. Police generally cannot assist probation officers with their search, but probation officers can assist police with theirs. But police must still have a search warrant, while probation officers don't-- IF such search is allowed as part of the subject's condition of the probation. In practice, however, probation officers don't help police with their search because they can easily and unknowingly contaminate the evidence or crime scene. Probation officers' searches generally have a different purpose than police searches. If you're asking if the subject's probation officer must be there to conduct a search, then generally yes, they cannot substitute another probation officer for the subject's assigned PO.
the open door policy