Flood of immigrants straining Canadian cities Updated Tue. Dec. 4 2007 8:44 AM ET The Canadian Press TORONTO -- Canada's three largest cities are struggling to cope with a flood of newcomers primarily from China, India, the Philippines and Pakistan as immigration approaches levels not seen since the end of the "Great Migration.'' Statistics Canada said Tuesday that 69 per cent of recent immigrants to Canada resided in the "magnet'' or "gateway'' cities of Montreal, Toronto and Vancouver -- dubbed MTV -- in 2006. That's down from 73 per cent in 2001 and 74 per cent in 1996. Still, 97...