A motion to compel asks the court to order either the opposing party or a third party to take some action. This sort of motion most commonly deals with discovery disputes, when a party who has propounded discovery to either the opposing party or a third party believes that the discovery responses are insufficient. The motion to compel is used to ask the court to order the non-complying party to produce the documentation or information requested, and/or to sanction the non-complying party for their failure to comply with the discovery requests.
The United States court system is divided into three systems; federal, tribal, and state. The federal courts have their own rules which are stated in the Federal Rules of Civil Procedure and the Federal Rules of Criminal Procedure. The states, on the other hand, have their own codes of civil and criminal procedure. The federal and state rules are similar, but have occasional differences.