Supporters of Bitcoin and other cryptocurrencies are raising alarms about a provision in the America Competes Act that they claim would give U.S. Treasury officials the virtually unchecked ability to lock down crypto accounts if they suspect money-laundering or other nefarious activities. The section of the bill in question, inserted by Congressman Jim Himes, a Democrat of Connecticut, is purportedly aimed at streamlining and modernizing the process by which the Treasury Department's Financial...