will be tracked Under the exchange, the released Taliban detainees were taken to Qatar, where the government says it will keep them under watch for at least a year. But some lawmakers fear there's no guarantee. How we are sure that the Qataris are going to do what they are supposed to do and we are able to keep -LRB- the released Taliban figures -RRB- from engaging again, Manchin told reporters. A memorandum of understanding between the United States and Qatar on the deal that freed Bergdahl offered no guarantee that the five Taliban commanders exchanged for the captured Army sergeant would be tracked, a Democratic member of the House Intelligence Committee told CNN. Rep. Adam Schiff reviewed the agreement and said, based on his reading, that it is possible the former U.S. detainees might disappear even during the first year in Qatar. Schiff told CNN's Jim Sciutto that the United States has some capability to track them while in Qatar, but after the first year, he said, all bets are off. We have to expect them to return to the fight, Schiff said. U.S. Secretary of State John Kerry defended the swap in an interview with CNN over the weekend, saying the former detainees would be monitored closely, and not just by officials in Qatar. He would n't say who else will be watching, but he said the United States is confident the conditions of their release will be honored. National