The fact that Congress wasn't aware that the FBI has used...

The fact that Congress wasn't aware that the FBI has used some 30,000 national security letters over the past few years is an indication that not enough oversight has been done. The money-laundering sections of the Patriot Act require scores of businesses to track the transactions of their customers and report to the government. It's an aspect of the Patriot Act that doesn't get much attention, but it should. This has huge implications for people's privacy.