Before revision:  Our findings provide evidence that state-wide mandates are effective in promoting social distancing within this study group .
After revision:  Decreases in mobility were associated with substantial reductions in case growth 2 to 4 weeks later. For example, a 10\% reduction in mobility was associated with a 17.5\% reduction in case growth 2 weeks later. Given the continued reliance on social distancing policies to limit the spread of COVID-19, these results may be helpful to public health officials trying to balance infection control with the economic and social consequences of these policies .