The presidency of George W. Bush began on January 20, 2001, when he was inaugurated as the 43rd President of the United States of America. The oldest son of former president George H. W. Bush, George W. Bush was elected president in the 2000 general election, and became the second US president whose father had held the same office (John Quincy Adams was the first).

After two recounts, Democratic presidential candidate Vice President Al Gore filed a lawsuit for a third. The Supreme Court's highly controverisal decision in Bush v. Gore resolved the dispute. The Florida Secretary of State certified Bush as the winner of Florida. Florida's 25 electoral votes gave Bush, the Republican candidate, 271 electoral votes, enough to defeat Al Gore. Bush was re-elected in 2004. His second term ended on January 20, 2009.

As president, Bush pushed through a $1.3 trillion tax cut program and the No Child Left Behind Act, and also pushed for socially conservative efforts such as the Partial-Birth Abortion Ban Act and faith-based welfare initiatives. Nearly 8 million immigrants came to the United States from 2000 to 2005 – more than in any other five-year period in the nation's history. Almost half entered illegally.

The term "Bush administration" is most commonly associated with one of two presidents of the United States with the name Bush:

George Walker Bush (born July 6, 1946) is an American politician and businessman who was the 43rd President of the United States from 2001 to 2009 and the 46th Governor of Texas from 1995 to 2000. The eldest son of Barbara Bush and George H. W. Bush, he was born in New Haven, Connecticut. After graduating from Yale University in 1968 and Harvard Business School in 1975, Bush worked in oil businesses. He married Laura Welch in 1977 and ran unsuccessfully for the House of Representatives shortly thereafter. He later co-owned the Texas Rangers baseball team before defeating Ann Richards in the 1994 Texas gubernatorial election. In a close and controversial election, Bush was elected President in 2000 as the Republican candidate, defeating Vice President Al Gore in the Electoral College. Bush is the second American president to have been the son of a former president. He is also the brother of Jeb Bush, former Governor of Florida.

Terrorist attacks occurred eight months into Bush's first term as president on September 11, 2001. In response, Bush announced the War on Terror, an international military campaign which included the war in Afghanistan launched in 2001 and the war in Iraq launched in 2003. In addition to national security issues, Bush promoted policies on the economy, health care, education, and social security reform. He signed into law broad tax cuts, the PATRIOT Act, the No Child Left Behind Act, the Partial-Birth Abortion Ban Act, and Medicare prescription drug benefits for seniors. His tenure saw national debates on immigration, Social Security, electronic surveillance, and enhanced interrogation techniques. His administration also withdrew the U.S. from a some international treaty processes, including the Kyoto Protocol on global warming.

Albert Arnold "Al" Gore, Jr. (born March 31, 1948) served as the 45th Vice President of the United States (1993–2001), under President Bill Clinton. He was the Democratic Party's nominee for President and won the popular vote in the 2000 U.S. presidential election.

Gore is currently an author and environmental activist. He has founded a number of non-profit organizations, including the Alliance for Climate Protection, and has received a Nobel Peace Prize for his work in climate change activism.

Gore was previously an elected official for 24 years, representing Tennessee in the U.S. House of Representatives (1977–85), and later in the U.S. Senate (1985–93), and finally becoming Vice President in 1993. In the 2000 presidential election, Gore won the popular vote by a margin of more than 500,000 votes. However, he ultimately lost the Electoral College to Republican George W. Bush when the U.S. Supreme Court settled the legal controversy over the Florida vote recount by ruling 5-4 in favor of Bush. It was the only time in history that the Supreme Court has determined the outcome of a presidential election.

William Jefferson "Bill" Clinton (born William Jefferson Blythe III; August 19, 1946) is an American politician who served as the 42nd President of the United States from 1993 to 2001. Inaugurated at age 46, he was the third-youngest president. He took office at the end of the Cold War, and was the first president of the baby boomer generation. Clinton has been described as a New Democrat. Many of his policies have been attributed to a centrist Third Way philosophy of governance.

Born and raised in Arkansas, Clinton became both a student leader and a skilled musician. He is an alumnus of Georgetown University where he was Phi Beta Kappa and earned a Rhodes Scholarship to attend the University of Oxford. He is married to Hillary Rodham Clinton, who has served as the United States Secretary of State since 2009 and was a Senator from New York from 2001 to 2009. Both Clintons received law degrees from Yale Law School, where they met and began dating. As Governor of Arkansas, Clinton overhauled the state's education system, and served as Chair of the National Governors Association.