Group 1 - The Canadian Prime Minister and provincial leaders are expressing concerns over U.S. officials meeting with Alberta separatists, emphasizing the need for respect for Canadian sovereignty [1][2][3] - Alberta's separatist group, "Alberta Prosperity Project," has been seeking meetings with U.S. officials to discuss a potential $500 billion credit line for a transition phase post-independence [2] - Despite some support for independence in Alberta, a recent poll indicates only 29% of residents favor separation, and many do not wish to join the U.S. [3] Group 2 - U.S. President Trump has threatened to impose a 50% tariff on Canadian-made aircraft if Canada does not resolve certification issues for Gulfstream products [4][5] - The potential cancellation of aircraft certifications could disrupt U.S. airlines and lead to significant operational challenges, particularly affecting regional airports [5] - This situation is part of a broader pattern of verbal and trade aggression from the Trump administration towards Canada, which has included public criticisms and threats [5]