The market's Powell reaction, JPMorgan earnings, Siri's AI upgrade and more in Morning Squawk

Group 1: Corporate Earnings - JPMorgan Chase & Co. exceeded analyst expectations for the fourth quarter, resulting in a 1% increase in premarket trading shares, with stronger-than-forecasted trading revenue [2][3] - Delta Air Lines shares fell 5% after reporting slightly lower revenue than anticipated for the fourth quarter, but it beat earnings per share expectations and projected a 20% profit increase in 2026, citing strong travel demand [5][6] Group 2: Market Reactions - Bank stocks, including JPMorgan, faced a challenging session following President Trump's proposal for a 10% cap on credit card interest rates, which industry executives view as potentially harmful to their business models [4] - Shares of Alphabet rose after the announcement of an AI-powered upgrade for Siri, helping the company reach a $4 trillion market cap [10][11] Group 3: Economic Policies - President Trump announced a 25% tariff on any country doing business with Iran, aimed at economically isolating the country, following threats of military action over the killing of anti-government protesters [8][9]