Canada is expected to lay out its retaliation to President Donald Trump’s new 50% tariffs Tuesday, while the president threatens even tougher penalties.Plus, the Supreme Court is allowing the Trump administration to move ahead with key parts of its mail-voting plan, but the justices left unresolved whether the changes themselves are legal.And Trump has put his endorsement, a campaign stop and allied super PAC money behind Darline Graham, as South Carolina Republicans decide today whether to stick with her or choose five-term Rep. Ralph Norman.These stories and more highlight your Unbiased Updates for Tuesday, Aug. 25, 2026.