THE US professor who first proclaimed the global "clash of civilisations" has ignited a new firestorm with his claim that Mexican immigration is splitting the US in two. Samuel Huntington argues in a new book that Americans are acquiescing in "their eventual transformation into two peoples with two cultures (Anglo and Hispanic) and two languages (English and Spanish)". "As their numbers increase, Mexican Americans feel increasingly comfortable with their own culture and often contemptuous of American culture," he writes. The stark warning from the 76-year-old chairman of the Harvard Academy for International and Area Studies coincides with a US Census...