From Human Rights Watch:

Deportations of non-citizens with drug convictions, and especially with drug possession convictions, increased significantly from 2007 to 2012. In addition to the 43 percent increase in deportations after convictions for drug possession during that period, deportations after convictions for sales, smuggling, manufacture, or trafficking increased 23 percent. For more than 34,000 deported non-citizens, the most serious conviction was for marijuana possession.

Click here to read the 93-page report