As I mentioned, the current pre-clearance operations are protected from cost recovery. That was one of the elements in the negotiations over a number of years. The U.S. is pursuing global pre-clearance, and they're applying cost recovery in all their operations. In fact, they're obligated to by Congress. Cost recovery is being applied to any of the new sites that are under discussion. Ultimately, it will be again the decision of the airport authority as to whether it makes economic sense for them to pursue pre-clearance and to explore for themselves what kinds of arrangements they may need to make in order to ensure that those costs can be covered.
On May 8th, 2017. See this statement in context.