Results from the regression models used indicate that the proportion of all charges filed by Federal prosecutors that involved sex trafficking and related cases increased significantly between 1994 and 2007. The rate of increase, however, slowed in the time period following the passage of the TVPA, suggesting that the TVPA may have helped to mitigate increases in new cases. In addition, results show statistically significant inverse relationships between immigration and sex trafficking-related charges filed, providing new evidence to support the possibility that some sex trafficking-related cases may be prosecuted as immigration cases instead. 59 references (Publisher abstract modified)