Mr. Hall’s notable cases include Wilson v. Arkansas, 514 U.S. 927 (1995), which held that the knock-and-announce rule of the common law is part of Fourth Amendment, State v. Sullivan, 348 Ark. 547, 74 S.W.3d 215 (2002) (on remand from Arkansas v. Sullivan, 532 U.S. 769 (2001)), holding that the Arkansas Constitution on pretextual arrests grants greater rights than does the Fourth Amendment, and several unreported trial acquittals in murder and other cases. He has participated in approximately 250 jury trials, a war crimes trial in the Special Court for Sierra Leone, and 200 appeals. He is licensed to practice in Arkansas, four other states, seven U.S. Courts of Appeals, and the International Criminal Court.

In addition to his work for Thomson West, he has authored numerous law review articles, numerous articles in NACDL's The Champion, and Criminal Procedure Section of the Arkansas Bar Association's Form Book (2004). Mr. Hall is one of the primary drafters of the Code of Conduct for Counsel Appearing Before the International Criminal Court on behalf of the International Criminal Bar, 2002 to 2004.

Mr. Hall is a member of the National Association of Criminal Defense Lawyers (NACDL), for which he served twelve years on the Board of Directors and as Secretary, Treasurer, and Second Vice President from 2003 to 2006; the American Board of Criminal Lawyers, the International Criminal Bar, the Arkansas Association of Criminal Defense Lawyers (AACDL), Arkansas Bar Association, American Bar Association, International Criminal Defence Attorneys Association, and the New York Association of Criminal Defense Lawyers.

Hall has participated in over 100 CLE presentations on criminal defense ethics, prosecutorial misconduct, and search and seizure in approximately 35 states, Quebec, and The Hague.

He is the 2002 recipient of the NACDL Robert C. Heeney Award for service to the criminal defense bar and NACDL, and the Champion of Justice Award from AACDL in 2003 and its first Humanitarian Award in 2005.