AP Top Headlines at 8:12 a.m. EDT

Canada will announce retaliatory tariffs against the United States on Tuesday after relations deteriorated sharply MondayPresident Donald Trump insists he's trying to level the playing field with Canada through more tariffsAn oil tanker was disabled after being struck by an unknown projectile off Oman, underscoring shipping risks as Iran maintains tight control over the Strait of HormuzThe Supreme Court's decision clearing one obstacle to the enactment of President Donald Trump's order on mail voting may not mean the order ultimately takes effect for November's electionsRussian President Vladimir Putin has signed a decree allowing the government to take temporary control of critical infrastructure if private owners fail to protect it from Ukrainian drone attacks or repair it afterwardA tor