Several million dollars
Michelle Obama
In 2011, the American people spent $1.4 billion dollars on the Obama family. This included vacations for Michelle Obama, along with the rest of immediate family.
Taking into account inflation, I'm going to say Mrs. Obama will end up having spent the most.
According to reports, President Obama spent around 97 million on vacations during his two terms in office, while President Bush spent approximately 20 million on vacations during his two terms.
During his presidency, George W. Bush spent approximately 20 million on vacations, while Barack Obama spent around 85 million on vacations.
Though neither candidate spent all they raised, McCain spent $346,666,422 and Obama spent $513,557,218.
Michelle Obama was born and raised in Chicago, Illinois. Later, she attended college at Princeton, in New Jersey, and law school at Harvard in Cambridge MA, but her childhood was spent in Chicago.
During his presidency, George W. Bush spent approximately 20 million on vacations, while Barack Obama spent around 97 million on vacations.
President Obama lived in Wichita Kansas. Wichita Kansas is also the city in which Obama's mother lived in during her pregnancy with Obama.
Barack Obama lived in NY during the early 80s, when he was studying at Columbia. But he was born in Honolulu, Hawaii, where he spent the majority of his life till college.
He spent it on advertising
Michelle Robinson (later Obama) was born and raised in Chicago. Other than her four years in New Jersey while attending Princeton, and several years at Harvard Law School in Massachusetts, she has spent nearly all of her life in Chicago. Of course, as First Lady, she lives in Washington DC, but she still returns to Chicago whenever possible to see friends and relatives.