In the United States, both Individuals and Businesses are required to file a Suspicious Activity Report (SAR) with FinCen when:
Individuals who transport more than $10,000 into or out of the United States1
Shippers and receivers involved in the transfer of $10,000 into or out of the United States.
Businesses that receive more than $10,000 in a transaction or in related transactions1
People who have control over more than $10,000 in financial accounts outside of the U.S. during a calendar year
How could these rules be interpreted when dealing with Bitcoin? (please contrast conservative and non-conservative viewpoints)
Since Bitcoin's value varies, does that mean that a declaration is required when the price exceeds a certain amount?
What is considered as "transporting" into and out of the United States?
Is simply running a Bitcoin QT client considered a "money services business" and is subject to FinCEN requirements? If my wallet is hosted, does that mean they are responsible?