WASHINGTON - Although Sen. Barack Obama is a Christian, his childhood and family connections to Islam are beginning to complicate his presidential ambitions. The Illinois Democrat spent much of last week refuting unfounded reports that he had been educated in a madrassa, or radical Islamic school, when he lived in Indonesia as a boy. “The Indonesian school Obama attended in Jakarta is a public school that is not and never has been a Madrassa,” said a statement put out by the senator’s staff. But the school did teach the Quran, Islam’s holy book, along with subjects such as math and...