From the Buffalo News:
A state secret more closely guarded than the agenda of the recent G-20 summit in Toronto finally was cracked Monday.
Yes, the Obama girls, Malia and Sasha, did visit the Canadian side of Niagara Falls on Sunday, along with their grandmother, Marian Robinson.
The White House on Monday confirmed the visit by the daughters of President Obama and first lady Michelle Obama, in a brief e-mail response to a question from The Buffalo News, but declined to reveal any details of the trip.
Other sources, however, confirmed that the two girls also went on the Journey Behind the Falls on their visit to the Canadian side.