Senator Joe Manchin (D-W.Va.) is believed to be the first senator to call for an outright ban.
Chief among the questions surrounding Bitcoin is the most basic: How does it work?
West apparently doesn't like when people use his intellectual property without permission.
No one digital currency should have all that power.
Bitcoin's price has grown five-fold in the past month.
Litecoin, an alternative digital currency, is growing after being added to several Chinese exchanges.