Border Patrol Chief Michael Fisher said today that he will never “feel comfortable” telling Congress that the border has been secured or that the government has a “scientific method” for tracking how many people attempt to enter the country illegally.

“When there are no more bad people looking to come into this country illegally between the ports of entry,” Fisher told the Senate Homeland Security and Government Affairs Committee. “That’s the only time that I would feel comfortable [enough] to come before this committee and others and suggest that the border is definitively secured. It is not an easy process.” …

“I don’t offer, even in the context of an effectiveness ratio, that somehow this is a scientific method and that I can assure the chairman and this committee or the American people that, at any given time, we will be able — on 4,000 miles on the northern border and 2,000 miles on the southern border — be able to say with 100 percent certainty the amount of people that enter and of that number how many people we apprehend,” he said. “The terrain does not allow it, the vastness of our borders don’t allow us [to do so].”