United States Attorneys (also known as federal prosecutors and, historically, as United States District Attorneys) represent the United States federal government in United States district court and United States court of appeals. There are 93 U.S. Attorneys stationed throughout the United States, Puerto Rico, the U.S. Virgin Islands, Guam, and the Northern Mariana Islands. One U.S. Attorney is assigned to each of the judicial districts, with the exception of Guam and the Northern Mariana Islands where a single U.S. Attorney serves both districts. Each U.S. Attorney is the chief federal law enforcement officer within his or her particular jurisdiction, acting under the guidance of the United States Attorneys' Manual. They supervise district offices of as many as 350 assistant United States attorneys, with as many as 350 more support personnel.

U.S. Attorneys and their offices are part of the Department of Justice. U.S. Attorneys receive oversight, supervision and administrative support services through the Justice Department's Executive Office for United States Attorneys. Selected U.S. Attorneys participate in the Attorney General's Advisory Committee of United States Attorneys.

The United States of America (commonly abbreviated to the United States, the U.S., the USA, America, and the States) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to the east and Russia to the west, across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories in the Pacific and Caribbean.

At 3.79 million square miles (9.83 million km²) and with over 312 million people, the United States is the third or fourth largest country by total area, and the third largest by both land area and population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The U.S. economy is the world's largest national economy, with an estimated 2011 GDP of $15.1 trillion (22% of nominal global GDP and over 19% of global GDP at purchasing-power parity). Per capita income is the world's sixth-highest.

William Ramsey Clark (born December 18, 1927) is an American lawyer, activist and former public official. He worked for the U.S. Department of Justice, which included service as United States Attorney General from 1967 to 1969, under President Lyndon B. Johnson. He supervised the drafting and played an important role in the passage of the Voting Rights Act of 1965 and Civil Rights Act of 1968. Since leaving public office Clark has led many left-wing activism campaigns, including opposition to the War on Terror, and he has offered legal defense to controversial figures such as Lyndon LaRouche, Slobodan Milošević and Saddam Hussein.

Clark was born in Dallas, Texas, to Thomas Campbell Clark, who was also a United States Attorney General and a justice of the Supreme Court, and Mary Jane (née Ramsey), the daughter of a prominent Texas judge and lawyer Wiliam Franklin Ramsey. Clark served in the United States Marine Corps in 1945 and 1946, then earned a B.A. degree from the University of Texas at Austin in 1949, and an M.A. and a J.D. from the University of Chicago in 1950. While at the Texas he was a member of Delta Tau Delta International Fraternity.

Aafia Siddiqui (Urdu: عافیہ صدیقی; born March 2, 1972) is an American-educated Pakistani cognitive neuroscientist, related by marriage to terrorist-mastermind Khalid Sheikh Mohammed. Not long after the September 11 attacks, Dr. Siddiqui left the United States for Pakistan in 2002. After the capture of Khalid Sheikh Mohammed in March 2003 in Rawalpindi, Pakistan, by the Inter-Services Intelligence, he has stated he gave names of innocent people under torture to "please his captors" and Siddiqui’s lawyers believe her name was one of these.. After she was named by him, Siddiqui disappeared off the grid for five years. Siddiqui and her children's whereabouts and activities from March 2003 to July 2008 are a matter of dispute. She reappeared in Afghanistan under detention in 2008. Although authorities claimed she was found in possession of bomb-making instructions and materiel (including sodium cyanide) at the time of her arrest in Afghanistan, Dr. Siddiqui would come to be charged, tried and convicted in U.S. federal court not for terrorist-related activities, but instead for assault with intent to murder her U.S. interrogators in Afghanistan - charges that carried a maximum sentence of life in prison. Siddiqui was ultimately sentenced by a United States district court to 86 years in prison in a trial that critics have called "a grave miscarriage of justice".

Eric Himpton Holder, Jr. (born January 21, 1951) is the 82nd and current Attorney General of the United States and the first black American to hold the position, serving under President Barack Obama.

Holder previously served as a judge of the Superior Court of the District of Columbia and a United States Attorney. In that office he prosecuted Congressman Dan Rostenkowski (Democrat, Illinois) for corruption charges related to his role in the Congressional Post Office scandal. Later, he was Deputy Attorney General of the United States and worked at the law firm of Covington & Burling in Washington, D.C. He was senior legal advisor to then-Senator Barack Obama during Obama's presidential campaign and one of three members of Obama's vice-presidential selection committee.

Eric Himpton Holder, Jr. was born in the Bronx, New York, to parents with roots in Barbados.^{[dead link]} Holder's father, Eric Himpton Holder, Sr. (1905–1970) was born in Saint Joseph, Barbados and arrived in the United States at the age of 11. He later became a real estate broker. His mother, Miriam, was born in New Jersey, while his maternal grandparents were immigrants from Saint Philip, Barbados. Holder grew up in East Elmhurst, Queens, and attended public school until the age of 10. When entering the 4th grade he was selected to participate in a program for intellectually gifted students. In 1969, he graduated from Stuyvesant High School in Manhattan and attended Columbia University, where he played freshman basketball and was co-captain of his team. He earned a A.B. degree in American history in 1973. Holder received his Juris Doctor from Columbia Law School, graduating in 1976. He worked for the NAACP Legal Defense and Educational Fund during his first summer and the United States Attorney during his second summer.