A new book reveals that Barack Obama considered his trip to Ireland among the best moments of his presidency.

Disappointed with his failing popularity polls, Obama drew on crowds in Ireland “for the affection and approval Americans would not give him,” the book reveals.

New York Times correspondent Jodi Kantor reveals in her  book “The Obamas” that the president was greatly encouraged and delighted with the reception he got both in Ireland and England in May 2011 when he was flatlining in the polls back home.

“At the first stop (in Ireland) he gave a delighted answer to the critics who thought he was too exotic or too Kenyan or whatever," Kantor writes.

“Several years before a genealogist had discovered he had roots in a small Irish town, just like many white Americans.

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“My name is Barack Obama of the Moneygall Obamas," he told the overjoyed crowd of 25-thousand in Dublin. “And I’ve come home to find the apostrophe that we lost somewhere along the way."

The book says he was “loose and funny” and that he “downright flirted with the crowd in a way he no longer could or would at home,”

Kantor notes that, “the images from the trip were the last triumphant ones Americans would see of Obama for a long time.”

Advisors said that during this period, which included the killing of Bin Laden, “Obama was walking the way he did when he was happiest, on the balls of his feet, with a little bounce in every step."

Here, catch Barack & Michelle enjoying a pint and a chat in Moneygall. Do you think he'd have the same reception in an Irish American pub?: