Constitutional law lawyer

A criminal defense lawyer is a lawyer specializing in the defense of individuals and companies charged with criminal activity.
Some criminal defense lawyers are privately retained, while others are employed by the various jurisdictions with criminal courts for appointment to represent indigent persons; the latter are generally called public defenders.
The terminology is imprecise because each jurisdiction may have different practices with various levels of input from country to country.
Some jurisdictions use a rotating system of appointments, with judges appointing a private practice attorney or firm for each case.

Kathleen Marie Sullivan is an American lawyer and name partner at Quinn Emanuel Urquhart & Sullivan, a global, litigation-only law firm headquartered in Los Angeles, California.
Based in the firm's New York City office, Sullivan chairs its national appellate practice group.
She is the first and only female name partner at an Am Law 100 law firm.
Previously, Sullivan served as dean of Stanford Law School, where she was the Stanley Morrison Professor of Law.