Well, e-manifest will become mandatory. It's a program that's being phased in over time. Currently it's in place for maritime carriers and air mode. We're now looking at implementing it at the land border. Ultimately, importers will also have to transmit information electronically in advance.
From my understanding of pre-clearance, it's a different issue. It relates to individuals who approach the border and want to enter the United States. If someone decides to turn around--if they're suspected, for example, of probing the border or testing the border--the United States wants to be able to question and possibly fingerprint them. The Canadian government has said that if somebody wants to turn around they should have the opportunity to do that without being fingerprinted by the United States.