Fed's Waller Says Tariffs, Energy Prices, Demand From AI Buildout Are Factors In Upward Pressure On Inflation; Earlier Concerns That Higher Oil Prices Could Push Up Prices More Broadly Have Greatly Diminished; Labor Market Stable, Close To Fed's Maximum-Employment Goal; He Expects Solid Consumer Spending Growth, Strong AI-Related Investment To Continue; Labor Market Not A Source Of Inflationary Pressure, Or A Concern For Strength Of Economic Expansion