President Donald Trump reacts strongly to a U.S. Supreme Court decision affecting mail-in voting. According to reporting from The Independent, Trump criticizes the court’s ruling that allows states to count mail-in ballots that are postmarked by Election Day but received after that day. Trump’s comments are presented as a warning to Republicans, reflecting his view that the policy undermines election integrity. Yahoo UK’s coverage similarly describes Trump’s anger and characterizes his reaction as accusing the process of being “cheating,” though its provided excerpt is brief. Together, the sources indicate that the Supreme Court decision centers on the timing rules for counting certain mail ballots, and that Trump publicly disputes the ruling. Both reports focus on Trump’s response rather than providing new legal arguments or alternative figures about how the decision will be applied. At the same time, they frame the controversy as an ongoing dispute over mail-in ballot handling and election administration following the Supreme Court’s authorization of the postmark/arrival rule.