Originally Posted by somebody

Because OTMs, or "Other Than Mexicans" as the Border Patrol classifies them, must be returned to their country of origin, they cannot be simply sent back across the southern border, as most Mexicans are. Under US law, they must be detained (in the US) pending a deportation hearing. The problem is, immigration detention centers are packed, so most OTMs are given a court summons and told to return in three months. A full 85 percent don't.