He asked Washington to put pressure on Pakistan to conduct the trial of Mumbai terror attack conspirators, including Lashkar-e-Taiba chief Hafiz Saeed.
"I did brief her on the state of the trial of Ajmal Kasab (the lone captured 26/11 terrorist) in India. I also mentioned about no progress in Pakistan even in respect of the five-six people they have arrested. And that Hafiz Saeed remains a free man," Chidambaram said.
"I think that is enough. I think the US understands the way India has approached the post 26/11 situation and how Pakistan has approached the situation. I think it is enough to draw attention to the difference and leave it there," he said.
He said he told Clinton that Saeed, believed by India to be the mastermind of the Mumbai carnage, is roaming free despite the evidence provided by New Delhi in six dossiers given to Islamabad.
He also expressed Indian concern about increasing militant infiltration from Pakistan.