Fed's Collins Says Flags Pressure On Lower Income Consumers; Fed's Barkin Says Underlying Dynamics Support Consumer Sector; Fed's Collins Says Mandates Keep Fed Focused On Mission Amid Broader Challenges; Fed's Barkin Says Realizes There Will Be Diverse Views About Fed Policy Choices; Fed's Collins Says Overall The Unemployment Rate Is Low; Fed's Barkin Says Worries What A Pullback In AI Investment Would Do To Economy, Productivity Rise Is Not Just From AI