Might it be to cut down on fentinal shipments? China is where most of it comes from, not that you would know that if you listen to Trump go on about Canada.
Unfortunately, the liberal party rules say they require a minimum of four months to elect a new leader. They may be able to fast track it in three months, but it’s entirely up to the liberal party so I suspect Trudeau will still be leader when Parliament resumes.
With Trudeau leaving, I suspect that at least one of the other parties will give them enough time to elect a new leader before bringing down the government. The government may even last until the required election date of late October however, nothing of any importance will likely be passed in that time
The Blue dollar refers to the grey market exchange rate currently hovering around 950 Argentina Pesos to 1 US Dollar. The official exchange rate is set at about 350 to 1. It is actually quite hard to spend US dollars directly in Arg. However it is common for both foreigners and Argentines to use grey market money changers at the blue rate. Argentines are only allowed to purchase a limited number of US dollars at the official rate each month so if they want to travel or protect the value of their savings from the extreme inflation they need to use the grey market to do so. The Blue dollar exist because the current government artificially pegs the peso at the lower rate.