Even sponsors of the bill have noted that biometric tracking systems are inordinately expensive and `` have experienced problems in test runs . '' Richard Sobel : Comprehensive immigration reform is a good thing for the U.S . But he says provisions in the Senate bill would require intrusive ID systems . Many workers would be denied the right to work because of faulty ID , he says . Others : ID systems are costly and violate constitutionally protected rights .
Richard Sobel : Comprehensive immigration reform is a good thing for the U.S . But he says provisions in the Senate bill would require intrusive ID systems . Many workers would be denied the right to work because of faulty ID , he says . Others : ID systems are costly and violate constitutionally protected rights .