"We understand the concerns which has been raised, we will deal with them professionally," US Deputy Secretary of State William J Burns told reporters after meeting Finance Minister Arun Jaitley.
He was responding when referred to India's protest over the report, which appeared recently.
India had termed as "extremely disconcerting" and "totally unacceptable" the reports that BJP was spied upon by NSA and said, if true, the matter will be taken up with the US.
Asked if the issue figured in his meeting with Jaitley, Burns replied: "We are confining those discussions to diplomatic channels right now".
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BJP figures in the list of foreign political parties along with Lebanon's Amal, Egypt's Muslim Brotherhood and the Pakistan Peoples Party on whom the National Security Agency (NSA) was given permission to carry out surveillance, says the document made public yesterday by 'The Washington Post'.
The document lists the 193 foreign governments as well as foreign factions and other entities that were part of a 2010 certification approved by the Foreign Intelligence Surveillance Court. The list includes India.