The Ethics Committee is still investigating three more serious allegations against Rangel, including charges that he improperly obtained four rent-controlled apartments in New York City, improperly used his office to raise money for the Rangel Center for Public Service at City College of New York, and that he failed to disclose rental income from an apartment in the Dominican Republic.
Five other members of the Congressional Black Caucus -- Reps. Bennie Thompson of Mississippi, Yvette Clarke of New York, Donald Payne of New Jersey, Carolyn Cheeks Kilpatrick of Michigan and Donna Christensen, the nonvoting delegate from the Virgin Islands -- also went on the trips to Antigua, Barbuda and St. Maarten.
The committee found that none of them or their staff members knowingly broke any rules, but they too will have to repay the cost of the trips.
"Although the Committee approved the Members' travel, that approval was conditional upon the information provided to the Committee being true and correct. That was not the case," the report stated. "[But] since the Members were provided false information by others … the Committee concludes that the Members committed no wrongdoing."
In Rangel's case, the report noted, "The evidence shows that members of Rangel's staff knew that corporations had contributed funds … for the conferences. This information was not provided to the Standards Committee when he sought and received approval" to go on the trips.
Peter Flaherty of the National Legal and Policy Center, an ethics watchdog group, first filed the ethics complaint in May 2009.
"I traveled to St. Maarten [in 2008] and registered for the event under my own name. I paid a registration fee. Inside, I snapped photos and openly made audio recordings. It was quickly obvious that the event was funded by corporations that employ federal lobbyists," Flaherty wrote to the committee in a letter posted on the center's Web site.
Flaherty also provided audio and video recordings of the influence of corporate sponsors there, which included Citigroup, Pfizer, American Airlines, AT&T, Verizon, Macy's and IBM.
The House Ways and Means Committee, which Rangel heads, will be central to any overhaul of the nation's health care system and at the center of the debate about the future of broad tax cuts enacted under President George W. Bush and set to expire in December.
ABC News' Dean Norland and Matt Loffman contributed to this report.