A recent surge in the number of child migrants trying to cross the US border from Mexico has rekindled public debate over US immigration policy. But the immigration issues that require Congress' urgent attention are not limited to the estimated 90,000 children who this year will journey into the United States alone and without authorization. Whether children who arrived yesterday or adults who came 20 years ago, 11 million unauthorized immigrants in the US are highly vulnerable to abuse of their basic rights- rights that US and international law guarantee.