No they don't need a warrant. They can enter and arrest the individual. They are not authorized to do a full search of the residence, however, they can search the immediate vicinity of the individual for things he may have stashed or weapons that might pose a threat to the officers.
Yes
The police need a Search Warrant to enter a private residence in order to collect evidence unless they have reasonable cause.
no becasue they can't even go inside a residence without a warrant
There are none, because forced entry by police executing a misdemeanor warrant is always forbidden in the United States. This may also be the case in most other countries. The only time when police are permitted to intrude and break into a private citizen's own home while executing a warrant, regardless of the likelihood of the person's guilt, is when they are executing a search warrant, or possibly an arrest warrant for a very serious crime, like murder. This law is very important, since it makes home invasions by the police illegal in the one place in which every person, even criminals, should have an absolute right to be safe and secure.
Yes, the states have no authority to countermand or nullify a federal warrant.
A warrant can be served at any time and many actually ARE served at late and unusual hours, because that's when the police can be pretty sure that they will find who, or what, they want at the premises. Also, there is an added advantage in that the people in the residence are likely to be groggy, confused, and less likely to put up any resistance.
No, a search warrant is issued for the search of a residence or building.
It depends on why he is entering. Was he called to the residence? Is he or she doing a 'welfare check'? What type of call history has there been at that residence? If the police officer has an arrest warrant, and knows the person named in the warrant is in the residence, then in the state of NC, the answer is yes.
Many judges are state and federal judges, so perhaps their jurisdiction is extended beyond the county they are in. If a search warrant is presented to you by the police, you can be certain it has merit just as it stands.
With a warrant or if he witnesses crime.
Don't understand the question. What do you mean by a "third party residence?"
The premises to search will be listed in the warrant, and cannot be exceeded. Also, if the warrant is to look for a large item, the search is limited to containers where the item could possibly fit.