This paper compares US Department of Homeland Security (DHS) estimates for visa overstays in fiscal year 2016 with estimates from the Center for Migration Studies (CMS). It finds that DHS has overstated the number of people from roughly 30 counties who have overstayed their temporary visas, half of them participants in the US Visa Waiver Program (VWP). In particular, the DHS estimates for 2016 include significant numbers of temporary visa holders who left the undocumented population, but whose departure could not be verified. Thus, the actual number of visa overstays in 2016 was about half of the number estimated by DHS. The paper also shows that the population growth of visa overstays was near zero in 2016 after adjusting DHS estimates to account for unrecorded departures. The country-specific figures in this paper should help DHS improve verification of departures of temporary visitors and also to reassess decisions about admission to the VWP.