WASHINGTON -- About two hours after declaring his support for same-sex marriage last week, President Obama gathered eight or so African-American ministers on a conference call to explain himself. He had struggled with the decision, he said, but had come to believe it was the right one.

The ministers, though, were not all as enthusiastic. A vocal few made it clear that the president's stand on gay marriage might make it difficult for them to support his re-election.

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