Ex-Colombia president stripped of US visa makes comeback as promoter of South America unity

Venezuela's President Nicolas Maduro smiles with newly sworn-in General Secretary of the Union of South American Nations, Colombia's former President Ernesto Samper, during a transfer ceremony at the Miraflores Presidential Palace in Caracas, Venezuela, Thursday, Sept. 11, 2014. Samper, who the U.S. stripped of his visa two decades ago for taking payments from the nation’s biggest drug cartel is making a political comeback as a promoter of South American solidarity. (AP Photo/Ariana Cubillos) (The Associated Press)

The newly-named General Secretary of the Union of South American Nations, Colombia's former President Ernesto Samper, attends his swearing-in and transfer ceremony at the Miraflores Presidential Palace in Caracas, Venezuela, Thursday, Sept. 11, 2014. Samper, who the U.S. stripped of his visa two decades ago for taking payments from the nation’s biggest drug cartel is making a political comeback as a promoter of South American solidarity. (AP Photo/Ariana Cubillos) (The Associated Press)

Venezuela’s President Nicolas Maduro applauds, center, as outgoing General Secretary of the Union of South American Nations and President of Surinam Desire Bouterse, left, shakes hands with the incoming general secretary, Colombia's former president Ernesto Samper, during a transfer ceremony at the Miraflores Presidential Palace in Caracas, Venezuela, Thursday, Sept. 11, 2014. Samper, who the U.S. stripped of his visa two decades ago for taking payments from the nation’s biggest drug cartel is making a political comeback as a promoter of South American solidarity. (AP Photo/Ariana Cubillos) (The Associated Press)

A former Colombian president stripped of his U.S. visa two decades ago for taking payments from the nation's biggest drug cartel is making a political comeback.

Ernesto Samper was sworn in Thursday at a ceremony in Venezuela's capital of Caracas as secretary general of the 12-member Union of South American Nations.

Analysts say Samper's traction among leftist, anti-American governments could help bridge the region's political divide. In recent interviews he said his goals for the regional group include jumpstarting stalled dialogue between Venezuela's government and the opposition, and helping Colombia sign a peace deal with Marxist rebels.

Samper as president regularly faced off with the U.S., which maintains he knew about payments to his 1994 campaign by the now-defunct Cali cartel.