One of the members of the committee was discussing risks associated with tuberculosis. Tuberculosis is more common in certain parts of the world, notably parts of Asia, from which we derive many of our immigrants. But if you have active TB disease and you're infectious to others, you are prohibited from travelling. In fact, when we're looking at immigrants who arrive in this country, they're not infectious with tuberculosis.
On March 15th, 2012. See this statement in context.