PrimeTime Politics Transport Minister John Baird and Senate Government Leader Marjory LeBreton comment on the Senate’s passage of the budget implementation bill (C-9).   Liberal Leader Michael Ignatieff launches his summer bus tour across Canada with an event on Parliament Hill. The B.C. Liberals are facing their biggest political crisis since first coming to power in 2001. Tens of thousands of British Columbians have signed a petition against the harmonized sales tax. Under B.C.'s initiative and recall legislation, the petition may trigger a referendum on the tax or force the government to hold another vote in the legislature on the HST. The "tax revolt" has found unprecedented support among British Columbians, and brought together disparate political groups. It’s led by Bill Vander Zalm, a former premier who left office under a cloud. Separate clouds are now forming over current Premier Gordon Campbell. Much of the HST's unpopularity can be traced back to a promise made by Campbell during the last election to not implement the tax.