Trade tensions and executive-branch actions dominated developments as U.S. negotiations with Canada collapsed, allowing 50% tariffs on billions in Canadian goods to take effect after talks derailed over disputed terms, prompting Canadian Prime Minister Mark Carney to suspend further discussions and promise dollar-for-dollar retaliatory measures. Domestically, the U.S. Postal Service finalized a regulation aligned with a presidential executive order requiring states to provide eligible voter lists for mail-in ballots or face delivery blocks, though implementation is currently frozen pending federal court decisions tied to an injunction by Judge Indira Talwani. On the international front, Iran's foreign ministry slammed the new Trump-Bessent economic sanctions package as an extraterritorial declaration of war against all sovereign nations, while Iranian military and parliamentary leaders issued warnings to regional allies against facilitating U.S. operations. In financial disclosures, President Donald Trump executed a broad portfolio reshuffle in June involving over 1,000 transactions, which included selling shares of Meta and acquiring Berkshire Hathaway.