We have just become aware of a US Department of Justice initiative called Operation Choke Point. It appears that the US government is pressuring financial institutions not to do business with companies in trades in which the government claims there is a high risk of fraudulent activity. There is an allegation that the actual government goal is to deny banking services to types of business that the government objects to for ideological reasons. Among those being targeted are coin dealers. A group representing payday lenders has filed a lawsuit challenging the initiative as contrary to law.
Here is the Wikipedia article on Operation Choke Point with links to a congressional report criticizing the initiative and links to the lawsuit that has just been filed:
Here is an article from The Economist: