In his movies, Chuck Norris has battled ninjas, drug kingpins and foreign armies. Now he's taking on something far more sinister: the US government. Norris, a conservative columnist and Christian, has written "Black Belt Patriotism," a collection of his "common sense solutions" to the problems facing America. Even five years ago, many would have laughed at the idea of the star of "Sidekicks" as an elder statesman, but Norris demonstrated his clout when his primary endorsement of Mike Huckabee gave the candidate a major boost. He spoke to The Post about his views and whether his tears really cure cancer....