How an AI slowdown could hit the economy and Supreme Court blocks Trump on mail-in voting: Morning Rundown

Key Points:

• Calls to slow AI development have sparked debate about its impact on U.S. economic growth, with AI investments driving nearly half of recent growth and contributing significantly to S&P 500 earnings; however, former President Trump dismisses AI safety concerns as a "hoax" and opposes regulation.
• The Supreme Court blocked a Trump administration attempt to enforce a USPS regulation requiring states to submit voter lists for mail-in ballot verification, dealing a setback to federal control efforts over midterm elections in a 7-2 decision.
• Apple TV’s “Widow’s Bay” dominated the 2026 Emmy Awards, winning six prizes including outstanding comedy series, while Matthew Rhys made history by winning lead acting awards for two different shows in the same night.
• Additional news highlights include Mitch McConnell’s return to the Senate, revelations about a lavish wedding funded by a Russian oligarch linked to Putin, and a Pentagon report citing munitions shortages due to the Iran war.
• Londoners face challenges accessing outdoor swimming spots amid record heat, prompting calls for more “blue spaces” to help cities adapt to extreme weather, as detailed by local open-water swimmers.