[Timeline]: On September 14, 2026, the US Supreme Court issued an order blocking President Donald Trump's plan to change mail-in ballot procedures. [Action]: The US Supreme Court majority denied the request for government ministries and agencies under President Donald Trump to enforce new procedures. [Reason]: The US Supreme Court stated there was insufficient time for state and local authorities to adjust their systems before the midterm elections. [Warning]: Election officials, including Republican officials, warned that implementing the measures could cause chaos and prevent many voters from exercising their rights. [Context]: President Donald Trump claimed the measures were intended to prevent election fraud, although President Donald Trump has used mail-in voting himself. [Statement]: Judge Brett Kavanaugh noted that while the measure might be within the US Postal Service's authority, state and local officials lacked the time to implement it properly. [Status]: The US Supreme Court has not yet ruled on whether the order by President Donald Trump is unconstitutional. [Next Step]: The issue may return to the US Supreme Court during the next election cycle.