The comedians who played presidents on “Saturday Night Live” have gathered for a comedic summit in a new Web video on FunnyOrDie.com.

The video, posted Wednesday, stars Fred Armisen as President Barack Obama. During the night, he is visited by the ghosts of presidents past, who urge him to push for financial reform.

Will Ferrell reprises his President George W. Bush, Darrell Hammond plays President Bill Clinton, Dana Carvey returns as President George H.W. Bush, Dan Aykroyd plays President Jimmy Carter and Chevy Chase returns as President Gerald Ford.

Jim Carrey, the lone comedian not a veteran of “SNL,” appears as Ronald Reagan.

The video, directed by Ron Howard, was made in association with Americans for Financial Reform, a pro-regulation coalition of labor and consumer activists.