The United States Attorney, within his/her district, has
plenary authority with regard to federal criminal matters.
This authority is exercised under the supervision and
direction of the Attorney General and his/her delegates.
The statutory duty to prosecute for all offenses against
the United States (28 U.S.C. § 547) carries with it the
authority necessary to perform this duty. The USA is
invested by statute and delegation from the Attorney
General with the broadest discretion in the exercise of
The authority, discretionary power, and responsibilities of
the United States Attorney with relation to criminal
matters encompass without limitation by enumeration the
Investigating suspected or alleged offenses against the
United States, see USAM 9-2.010;
Causing investigations to be conducted by the appropriate
federal law enforcement agencies, see USAM 9-2.010;
Declining prosecution, see USAM 9-2.020;
Authorizing prosecution, see USAM 9-2.030;
Determining the manner of prosecuting and deciding trial
Recommending whether to appeal or not to appeal from an
adverse ruling or decision, see USAM 9-2.170;
Dismissing prosecutions, see USAM 9-2.050; and
Handling civil matters related thereto which are under the
supervision of the Criminal Division.