He is to take charge at a time when officials from both countries have intensified efforts to find an amicable resolution of the issue of Khobragade's arrest.
Jaishankar, who till recently was India's Ambassador to China, arrived in Washington this afternoon from New York where he flew in from New Delhi.
While he would formally present his credentials to US President Barack Obama at the White House in the new year, Jaishankar is expected to present his credentials to the Assistant Secretary of State for South and Central Asia Nisha Desai Biswal at the State Department soon.
She was arrested on December 12 on charges of making false declarations in a visa application for her maid Sangeeta Richard. She was released on a USD 250,000 bond after being charged with visa fraud.
Subsequent revelations that she was strip searched and held with criminals triggered a row between the two sides.