Mt. Gox Dwolla account frozen by DHS
Using bitcoin as a way to launder dollars requires the ability to turn USD into bitcoin and back again, which, incidentally, is exactly what Mt Gox does.<p><pre><code>  dirty money -> mt gox -> bitcoin -> mt gox -> clean money
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I'm obviously speculating here, but this seems like a logical reason for the DHS to come in and shut things down.