One challenge with this approach is that there may be legitimate calls from legitimate people in those countries trying to reach our shores, trying to reach Canadian families here. That's the danger of making arbitrary decisions in a network at the tail end. At the source, yes. Can we enforce that? It's outside of everyone's jurisdiction here, unfortunately. Should we all work together? Absolutely.
Evidence of meeting #7 for Industry, Science and Technology in the 43rd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was stirshaken.
A recording is available from Parliament.