This study expands on prior Commission research by examining the geographic mobility of federal offenders. For this report, mobility is defined as having convictions in multiple states, including the location of the conviction for the instant offense. This report adds to the existing literature on offender criminal history in two important ways. First, the report provides information on how mobile federal offenders are, as measured by the number of offenders with convictions in multiple states. Second, the report provides information on the proportion of offenders with convictions in states other than the state in which the offender was convicted for the instant offense. The report also examines the degree to which out-of-state convictions in offenders’ criminal histories contributed to their criminal history score and their Criminal History Category.