Job cuts by tech firms are putting the controversial H-1B guest-worker program in the spotlight once again. Sen. Charles Grassley, R-Iowa, kicked off the latest debate in January by publicly calling on Microsoft to prioritize American workers over foreign guest workers as the software giant downsizes. In the wake of Grassley’s letter to Microsoft, questions have been raised about the legality of axing H-1B workers first. And H-1B critics have stepped up their attacks on a program they say makes little sense during a time of corporate belt-tightening. H-1B visas rarely go to exceptional talent and often are used by...