The US economy rose 6.4% in the first quarter, driven by a $1.9 trillion stimulus package, more Americans getting vaccinated and fewer consumers getting sick. The good news outweighed signs that inflation is growing and demand in some sectors is outstripping supply. Still, analysts had predicted the US economy would grow 6.7% in Q1.  The economic gains were made as vaccinations were distributed and coronavirus cases fell. About 43% of the population have received at least one coronavirus shot...