I think there is reason for concern, as you suggest, that these kinds of fees are being used in excess. In particular, look at the employment insurance financing over the past, what, 10 or 12 years. Large amounts of excess revenues relative to the needs of that program are being used to finance other purposes. So airport fees and employment insurance premiums should be set to cover the costs of those programs. They should be cost recovery. That's their purpose. They should not be used as a general revenue source.
On March 31st, 2008. See this statement in context.