Dwolla <-> MtGox under investigation?

[GuiltySpark343]

Not sure if this article is true. I thought Dwolla only processes fiat, not actual BTC. So I'm confused by this article entitled, "Homeland Security cuts off Dwolla bitcoin transfers Immigration and Customs Enforcement confirms an "ongoing investigation" that led to Dwolla cutting off bitcoin transfers to Mt. Gox."

http://news.cnet.com/8301-13578_3-57584511-38/homeland-security-cuts-off-dwolla-bitcoin-transfers/

And more here with reported copy of letter

http://www.businessinsider.com/dwolla-mt-gox-2013-5

[Stephen Gornick]

I thought Dwolla only processes fiat, not actual BTC.

Dwolla account-to-account transfers are one of the funding methods to send funds to Mt. Gox or to withdraw from Mt. Gox.

There are a half dozen threads on this development.  Here's one with more info:
 - http://bitcointalk.org/index.php?topic=205370.0