US President Barack Obama presents the P

US President Barack Obama presents the Presidential Medal of Freedom to musician Bob Dylan during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

US President Barack Obama stanads next t

US President Barack Obama stanads next to musician Bob Dylan before presenting him with the Presidential Medal of Freedom during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

President Obama Awards Presidential Medals Of Freedom

WASHINGTON, DC - MAY 29: Musician Bob Dylan (L) is presented with a Presidential Medal of Freedom by U.S. President Barack Obama (R) during an East Room event May 29, 2012 at the White House in Washington, DC. The Medal of Freedom, the nation's highest civilian honor, is presented to individuals who have made especially meritorious contributions to the security or national interests of the United States, to world peace, or to cultural or other significant public or private endeavors. (Photo by Alex Wong/Getty Images)

President Obama Awards Presidential Medals Of Freedom

WASHINGTON, DC - MAY 29: Musician Bob Dylan (R) is presented with a Presidential Medal of Freedom by U.S. President Barack Obama (L) during an East Room event May 29, 2012 at the White House in Washington, DC. The Medal of Freedom, the nation's highest civilian honor, is presented to individuals who have made especially meritorious contributions to the security or national interests of the United States, to world peace, or to cultural or other significant public or private endeavors. (Photo by Alex Wong/Getty Images)

President Obama Awards Presidential Medals Of Freedom

WASHINGTON, DC - MAY 29: Musician Bob Dylan (R) is presented with a Presidential Medal of Freedom by U.S. President Barack Obama (L) during an East Room event May 29, 2012 at the White House in Washington, DC. The Medal of Freedom, the nation's highest civilian honor, is presented to individuals who have made especially meritorious contributions to the security or national interests of the United States, to world peace, or to cultural or other significant public or private endeavors. (Photo by Alex Wong/Getty Images)

President Obama Awards Presidential Medals Of Freedom

WASHINGTON, DC - MAY 29: Musician Bob Dylan (L) is presented with a Presidential Medal of Freedom by U.S. President Barack Obama (R) during an East Room event May 29, 2012 at the White House in Washington, DC. The Medal of Freedom, the nation's highest civilian honor, is presented to individuals who have made especially meritorious contributions to the security or national interests of the United States, to world peace, or to cultural or other significant public or private endeavors. (Photo by Alex Wong/Getty Images)

President Obama Awards Presidential Medals Of Freedom

WASHINGTON, DC - MAY 29: Musician Bob Dylan (R) is presented with a Presidential Medal of Freedom by U.S. President Barack Obama (L) during an East Room event May 29, 2012 at the White House in Washington, DC. The Medal of Freedom, the nation's highest civilian honor, is presented to individuals who have made especially meritorious contributions to the security or national interests of the United States, to world peace, or to cultural or other significant public or private endeavors. (Photo by Alex Wong/Getty Images)

US President Barack Obama smiles before

US President Barack Obama smiles before presenting the Presidential Medal of Freedom to musician Bob Dylan during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

Muscian Bob Dylan is seen with the Presi

Muscian Bob Dylan is seen with the Presidential Medal of Freedom after he was presented with the medal by US President Barack Obama during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

US President Barack Obama shows the way

US President Barack Obama shows the way to musician Bob Dylan before presenting the Presidential Medal of Freedom to him during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

Former Supreme Court associate justice J

Former Supreme Court associate justice John Paul Stevens (L) looks up as musician Bob Dylan arrives on stage to receive the Presidential Medal of Freedom during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

US President Barack Obama shows the way

US President Barack Obama shows the way to musician Bob Dylan before presenting the Presidential Medal of Freedom to him during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

Muscian Bob Dylan is seen before receive

Muscian Bob Dylan is seen before receiveing the Presidential Medal of Freedom from US President Barack Obama during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

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US President Barack Obama presents the Presidential Medal of Freedom to musician Bob Dylan during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

US President Barack Obama presents the P

US President Barack Obama presents the Presidential Medal of Freedom to musician Bob Dylan during a ceremony on May 29, 2012 in the East Room of the White House in Washington. The award is the country's highest civilian honor. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)