Fed's Waller Says If Inflation Unexpectedly Rises, Fed Could Pause Rate Cuts; Latest Inflation Data 'Disappointing'; Economy On Solid Footing, May Not Be Slowing As Much As Desired; Expect Gdp To Grow Faster In 2h 2024; Household Resources For Future Consumption 'In Good Shape'; Waller Sees Pent-up Demand For Big-ticket Items, Consumers 'eager' To Make Purchases As Rates Come Down; Labor Market 'Quite Healthy,' Labor Supply And Demand Have Come Into Balance