As Barack, 63, Bill, 78, and Hillary, 77, entered the U.S. Capitol rotunda in Washington, D.C., on Monday for the 78-year-old’s historic swearing-in ceremony, people at the Capitol One Arena could be heard loudly booing.

Bill Clinton, George W. Bush and Barack Obama have all arrived at the Capitol for President-elect Donald Trump's inauguration. Norah O'Donnell anchored CBS News' special report.

WEST PALM BEACH, Fla. -- Former first lady Michelle Obama will skip the inauguration of President-elect Donald Trump, the second time in two weeks that she is not attending a gathering of former U.S. leaders and their spouses, but former Presidents Barack Obama, George W. Bush and Bill Clinton will be there.

Michelle Obama was the only spouse absent at the funeral service at Washington National Cathedral, where her husband and Trump were seated next to each other and chatted and laughed like old friends despite the history of political animosity between the Democratic former president and the returning Republican.

According to NBC News, the Obamas, Clintons and Bushes won't be at the traditional lunch that follows Trump's swearing-in.