Colombian President Alvaro Uribe has authorized the extradition to the US of a woman accused of managing finances for the leftist Farc rebel army.
Farc guerrillas finance their struggle through kidnapping and drugs
Omaira Rojas, known by her nickname "Sonia", has faced drug trafficking charges in the US since 2003.
She was briefly imprisoned aboard a ship after her capture last year, amid fears her former colleagues in Farc were trying to kill her.
President Uribe has extradited some 200 suspected drug traffickers to the US.
37-year-old Sonia is accused by the US of managing up to half of Farc's total income from the drug trade.
Colombia's oldest guerrilla army, the Farc has financed its four-decades old struggle for a Marxist state through extortion, kidnapping and the cocaine trade.
President Uribe, a staunch US ally, has claimed his hardline approach to the rebels is paying dividends.
Mr Uribe is shortly expected to authorise the extradition of Miguel Rodriguez Orejuela, a former chief of the notorious Cali drug-smuggling cartel.
Gilberto Rodriguez Orejuela, his brother, was extradited in December, and has already appeared in court in Florida.