PORT-AU-PRINCE, Haiti — Former Presidents George W. Bush and Bill Clinton are traveling to Haiti's rubble-filled capital today as part of their effort to raise aid and investment for a country still reeling from a devastating Jan. 12 earthquake.

It is the first joint visit to the impoverished Caribbean nation for the two former leaders, who were tasked by President Barack Obama with leading the U.S. fundraising effort.

After meeting with President Rene Preval on the grounds of the collapsed national palace, they are expected to tour the tarps-and-tent city on the adjacent Champ de Mars, the national mall filled with 60,000 homeless quake survivors living in squalor.

While the government and business leaders hail their appearance as a signal of America's commitment to help, the visit by two ex-presidents who have played major roles in Haiti's recent political trajectory also is reminding the country of its tumultuous past.

Supporters of ousted President Jean-Bertrand Aristide have scheduled protests to demand the return of their exiled leader and plead for more aid.

"We are going to bring our message to the presidents, that our situation here is no good. The way people are living in Haiti is no way for anyone to live," said Fanfan Fenelon, a 30-year-old resident of the Bel Air slum.

Clinton and Bush will arrive in a country struggling to feed and shelter victims of the magnitude-7 quake, which killed an estimated 230,000 people. Another 1.3 million quake survivors are homeless, with many living in camps prone to dangerous flooding in the April rainy season.