Legal admission to the United States is primarily for the purpose of permanent residence or temporary stay. Whereas the number of permanent admissions is only now reaching the levels from the turn of the last century, the total number of temporary admissions today--about 25 million--is about 200 times greater than a century ago. The global economy sends tens of thousands of businessmen and intracompany transferees from Japan and other trading partners to our shores. It sends foreign students to American's preeminent institutions of higher learning. And it supplies specially skilled workers...