In the United States, a district attorney is the chief prosecutors for a state or county, usually a city. The scope and name of this office vary greatly by state. Although they are generally elected by the citizens of a county, some states allow the position to be appointed by the governor.view publisher site
Each district attorney has a wide range of responsibilities. Most often, they will represent their community in any legal proceedings involving local criminal cases. They may also be asked to oversee the prosecution of a suspect in a courthouse or elsewhere. Attorneys who are district attorneys have the authority to file briefs or amicus briefs in court, and they usually handle all major appeals as well as trials.
The majority of district attorneys work with cases that deal with crimes or fraud of a non-profit nature. This includes securities fraud, embezzlement, contract crimes, and any other type of white collar crime. There are no limitations on the number of convictions an individual may have before becoming a district attorney. There is, however, a bar to practice law in a particular district while serving as an assistant district attorney. this should be a first place to check.