Obama and former presidents to attend George W. Bush’s library dedication

President Barack Obama will join his four predecessors at the dedication ceremony for former President George W. Bush’s presidential library later this month in Dallas.

First reported by Time Magazine, Obama will appear with Bush and the three other living former presidents—Jimmy Carter, George H.W. Bush and Bill Clinton—who are all confirmed to attend the April 25 ceremony.

The event marks the first time in four years the five have met in person. As members of what's long been referred to as the “world’s most exclusive club,” the presidents last met in January 2009—just days before Obama was sworn in to succeed George W. Bush at the White House.

Also set to attend: former Florida Gov. Jeb Bush and former Secretary of State Hillary Clinton—both of whom have been frequently mentioned as possible 2016 presidential contenders.

But one major unknown is whether Dick Cheney, Bush’s former vice president, will attend. Cheney’s spokeswoman did not immediately respond to a request for comment.

Cheney attended the groundbreaking of the library in 2010, but has since spoken publicly of the strain on his relationship with his former boss after Bush refused to pardon Scooter Libby, a longtime Cheney aide who was convicted of lying to a grand jury investigating who leaked the name of a CIA agent to the press.