Group 1 - The U.S. government has suspended tax exemptions on imported packages valued at $800 or less starting from August 29, requiring all small packages to pay applicable taxes [1] - As a result of the new regulations, 25 countries have announced a suspension of package shipments to the U.S. due to uncertainties related to transportation services [1] - Various postal services, including those from Russia, Bulgaria, and South Korea, have halted the acceptance of goods destined for the U.S. due to issues related to customs duties and stricter electronic pre-declaration requirements [1] Group 2 - An analysis report from the Cato Institute indicates that the removal of tax exemptions for small imports will significantly harm low-income groups in the U.S. and further complicate logistics companies [2] - The report also suggests that there will be serious implementation challenges associated with the new customs measures [2]