Some Federal agency serves up some rules on whatever
Congress, who is actually in charge of passing laws, says, "Hey, wait a minute. Shouldn't we have looked at this first?"
This seems to be one of those "We have to pass it to see what's in it." type of deals.
I am NOT saying the Republicrats are all above board in what they're doing and why ($$$), but it does kind of seem to be in their bailiwick to investigate before things like this are approved or passed.