http://www.nytimes.com/2014/10/27/ny...uarantine.html
Cuomo and Christie were forced to change their policies by the medical industry and the federal government.'
"The Obama administration suggested otherwise. Officials said the quarantine rules could create “a system of perverse incentives,” encouraging health care workers to fly into a different airport, like Atlanta or Washington Dulles, outside states that had adopted the new policies."
That was what Henna basically said. Healthcare workers could have flown into Atlanta or DC, then booked a domestic flight to return to NYC so Cuomo and Christie's plan would do absolutely nothing.