"Key members of Congress have been clear they're not prepared to support US military aid to Pakistan absent some specific actions," State Department spokesperson Elizabeth Trudeau told reporters.
Trudeau, however, would not say what specific actions US lawmakers want Pakistan to take before they can support the military aid.
"I would direct you to Congress, those specific members, for anything further on their position. As always, we are committed to working with Congress to deliver security assistance to our partners and allies. It furthers US goals by building capacity to meet shared security challenges," she said.
She said Pakistan has said they would not discriminate against militant groups.
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"We could encourage them to continue to live up to that," she said.
Meanwhile The New York Times in an editorial praised Senator Bob Corker, Chairman of the Senate Foreign Relations Committee, for putting a hold on the sale of eight F-16 fighter jets to Pakistan with American taxpayers' money.
"Mr Corker told The Times he would lift the hold on the aid if Pakistan cracks down on the Haqqani network, which he called the 'No 1 threat' to Afghanistan and American troops there," it said, adding that "it is time to put the squeeze on Pakistan."
Responding to the damning editorial, Pakistan's Ambassador to the US, Jalil Abbas Jilani, said allegations of duplicity and double game are extremely painful especially when his country has suffered the most due to war in Afghanistan.
Congressman William Keating ranking member of the
Subcommittee on Terrorism, Non-Proliferation and Trade asked panelists if ISIS was a state within a state.
"It is by no means a rogue institution within Pakistan. It does not operate independently or on its own. It is an instrument or an arm of the Pakistani army. It is implementing the policies of the Pakistani army. It is implementing on behalf of the Pakistani Army," said Tricia Bacon, Assistant Professor, American University.
"I concur with my colleagues," Khalilzad said.
Salmon said he personally believed that as the first step, the US should completely cut off aid to Pakistan.
"That would be the right first step. If we do not any changes, we move some of the other suggestions, state sponsor terrorism, possible economic sanctions. I personally believe we have the worst policy that we have and what we are doing is rewarding thugs," Salmon said.