12月3日外盘头条：亚马逊推出最新自研芯片 花旗扩充投资级债券交易团队 特朗普拟将禁入令扩大至约30个国家

Group 1 - The U.S. government plans to expand its travel ban to approximately 30 countries following a shooting incident involving National Guard soldiers in Washington, D.C. [4][6][21] - Currently, the U.S. has a complete travel ban on 12 countries and partial restrictions on 7 others [4][21]. Group 2 - U.S. gasoline prices have dropped to an average of $3 per gallon, the lowest level since 2021, with at least 30 states reporting prices below this threshold [8][24]. - Factors contributing to the decline in gasoline prices include lower crude oil prices and the introduction of winter gasoline formulations [8][24]. Group 3 - Amazon is rapidly launching its latest self-developed artificial intelligence chip, named Trainium3, to compete with products from Nvidia and Google [10][26]. - The chip has already been installed in a few data centers and will be available to customers starting this week, with plans for a large-scale rollout by early next year [11][27]. Group 4 - Citigroup is expanding its investment-grade bond trading team in anticipation of a potential record surge in corporate bond issuance driven by artificial intelligence investments [13][29]. - The bank has hired Chris Schuville from HSBC to lead its high-grade corporate bond trading team, focusing on technology, media, and telecommunications sectors [13][29]. Group 5 - Bank of America suggests that its wealth management clients consider allocating 1%-4% of their portfolios to cryptocurrencies [15][31]. - The bank's investment strategy team will begin covering four Bitcoin exchange-traded funds (ETFs) starting in January [15][32]. Group 6 - Adobe Analytics reports that U.S. online spending during the five-day holiday shopping period reached $44.2 billion, with a 7.7% increase compared to the previous year [17][34]. - The spending during this period was driven by significant sales on Cyber Monday, which alone accounted for $14.25 billion [17][34].