All transactions can be easily tracked no matter where the money is coming from and where it is going to, if the security agencies are ready for that, they would do it without any waste of time. However the records and details of every sender and receiver is always there to making their investigations very way easier for them to carrying out. So I think there should be no excuse for them to investigate and as you have said, some of the agents has turned it to feeding ground for themselves and they sometimes coming out to talking about it is just to fulfill all form of righteousness on their path for the people to see only them know what they do behind.