Jofi Joseph, 40, who was part of the National Security Council's nuclear nonproliferation team, was just six months old when his Indian parents moved from Germany to the US.
A bright student, Joseph won several prestigious awards during his school and college days at Muskegon city in Michigan, including the National Citizen Bee.
In 1993, Joseph, then a student, told a local newspaper that "his parents were natives of India who moved to Muskegon from West Germany when he was only 6 months old".
He apologised after news of his sacking became public and regretted violating the trust placed in him.
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"What started out as an intended parody account of DC culture developed over time into a series of inappropriate and mean-spirited comments," Joseph told Politico in an email.
One person who was not surprised by the revelation was Joseph's high school religion teacher, Russell Gallas, who remembered him as a "smart kid with a robust sense of humour".
According to the Chronicle's archives, Joseph is the 1990 valedictorian of Muskegon Catholic Central High School, where he won an array of academic honours. As a 17-year-old high school student, he won a National Citizen Bee and a USD 7,000 scholarship.
A Truman Scholar at the Princeton University, among his academic accolades was a Rotary Fellowship at the University of Salzburg in Austria in 1993.
"I really have a strong interest in government and international affairs," Joseph told the Chronicle in 1993.
"It's my commitment to public service. I want to make a difference in life, and the best way to do this is a career in this, helping to shape our nation and foreign policy," he was quoted as saying.
"Former Executive Branch/Capitol Hill Policy Maven Looking for New Opportunities," says the profile.
The profile also indicates Joseph has not lost his sense of humour.