Yes, we had these challenges when I was heading the mutual assistance section at the Department of Justice. You would have these requests come in with information that was maybe not sufficient to get a freezing order.
Internationally, this is a very well-known practice. The banks are a lot more sensitive, especially these days. Sometimes if you just disclose that information to them, you're going to have a pretty good chance of their freezing the money under the money-laundering requirements if it's money in the bank, even if you don't think you have enough to get the search warrant. I know that sounds a bit tricky, but it's certainly common practice, because the banks are much more sensitive about money laundering today, as we know.
Sometimes methods like that can at least buy you some time, and then you can try to gather more information, if that's what you need. Certainly notifying the banks is useful when you have suspicions. The Swiss do it all the time. That's how they get a lot of things frozen. I think it works.