IBD: Away from the low growth and high regulation of an America under Washington's thumb, our northern neighbor is economically strong. As 2011 ends, Canada has announced yet another tax cut — and will soar even more. The Obama administration and its economic czars have flailed about for years, baffled about how to get the U.S. economy growing. In reality, the president need look no further than our neighbor, Canada, whose solid growth is the product of tax cuts, fiscal discipline, free trade, and energy development. That's made Canada a roaring puma nation, while its supposedly more powerful southern neighbor stands on the outside looking in. On Thursday, Canadian Prime Minister Stephen Harper announced that he will slash corporate taxes again on Jan. 1 in the final stage of his Economic Action Plan, dropping the federal business tax burden to just 15%. Along with fresh tax cuts in provinces such as Alberta, total taxes for businesses in Canada will drop to 25%, one...