According to Blank, the TSA might let airports that hire their own screeners to employ them for tasks unrelated to security during off-peak hours. The importance of this is that is would make more economic sense for airports that have heavy morning and evening traffic with lulls in between. Meanwhile, subcommittee chairman Trent Lott, R-Miss., has told congress that while the TSA had done a good job, private companies would be more efficient and less expensive. The TSA was put together after 9-11 and up till now has employed and trained around 55,000 security screeners for airports across the U.S. These screeners have long been criticised as too expensive and no better than the private operators of the past. Studies (that have themselves been criticised) have shown that the private contractors are as effective as TSA screeners.