Originally Posted by RichardKenner

As I've said before, the major purpose of the checkpoint is to make the operation require more people, in the hope that five people conspiring to do things will be more visible to intelligence and law enforcement than a lone person. So it does make some sense.

But to answer the OP: there has been no change in the amount of liquid that can be brought through the checkpoint, but anecdotal evidence suggests that fewer and fewer TSOs care about liquids.