p>Stephen Harper took his political opponents to task Wednesday, calling the level of spending proposed by the Liberals and New Democrats "mind-boggling" at a time when Canadians fear economic uncertainty could spread from south of the border. The Conservative leader criticized the various daily pledges made by Liberal Leader Stéphane Dion and NDP Leader Jack Layton, saying their spending promises would drive the country into a deficit. "If you look at the tens of billions of dollars of announcements they are making, the only way these can be financed are not simply through big increases in taxes that they're already promising - carbon taxes, GST - but it would mean deficits and large deficits, big deficits." He cited Dion's Tuesday announcement of a proposed catastrophic drug plan and said estimates done by provincial premiers put the projected cost of such a plan at $6 billion to $10 billion a year, a far cry from the $800 million...