Osama hard to find

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Why was Bin Laden hard to find or took too long to capture? I would hear from my family that Obama wanted to do something with some sort of speech and also I would hear from the news that they couldn't believe it that the obvious location was the last to check. They mentioned about how the wall was 10 feet long and they would burn their own trash like they were hiding someone yet they still ignored it or something. Or did they really have trouble finding him for 9/10 years? Or am I or they're wrong (those who told me)?