(Mark Felix/Bloomberg)Key Takeaways: President Donald Trump extended a Jones Act waiver for 90 days, allowing some foreign ships to move energy commodities between U.S. ports. Today, the Trump Administration issued a 90-day extension to the Jones Act waiver to ensure our military and key industries maintain uninterrupted access to critical resources. Trump’s Jones Act exemption was already historic in nature — having applied to hundreds of goods since he first authorized it in mid-March. The waiver, however, has provoked alarm from shipbuilders and their supporters in Congress, who’ve warned the exemptions are undercutting the Jones Act. ), had appealed to Trump to stop waiving the Jones Act.