As part of the counterinsurgency mission, US Army units will return to the same regions in order to build on experience and develop stronger relationships on the ground.
Selvarasa Pathmanathan led the remnants of the rebel organization that was militarily defeated by Sri Lanka three months ago.
A court ruled Thursday on the case of a 2003 double bombing, but the case may continue with appeals. Experts say Indian justice moves so slowly it hampers counterterrorism.
Opposition party members walk out of parliament over what they say is an unwarranted concession to Pakistan.
Despite crackdowns, terrorist groups are showing a persistence and resilience that worries authorities.
During her visit to India, Secretary of State Clinton also announced that Prime Minister Singh will make the first state visit under Obama.
The process will be closely watched by the US and other foreign governments for signs of Pakistan's ability to deal with the Taliban.