The expiration date of your visa is the last day you may use the visa to enter the United States. It does not indicate how long you may stay in the United States. Your stay is determined by the Department of Homeland Security at your port of entry.
In some circumstances, a person may be released from custody without bail and be given an order to appear, with certain conditions as governed and directed by a court-affiliated agency. Project Remand ('PR'), a Ramsey County pre-trial court service program, is one example of such an agency.
bail. n. 1. (Law) a sum of money by which a person is bound to take responsibility for the appearance in court of another person or himself or herself, forfeited if the person fails to appear. 2. (Law) the person or persons so binding themselves; surety.