President Barack Obama and U.S. lawmakers are hailing a historic peace deal reached between the government of Colombia and the leftist rebels of the FARC movement. The agreement comes after significant U.S. investment in Colombia, and, if approved by voters, would end the longest-running armed conflict in the Americas.Colombian officials and rebel leaders announced they had reached a deal on Wednesday in Havana, Cuba, after four years of difficult negotiations to which the U.S.