Tamar Jacoby : Immigration reform in air , but focus tends to be on the undocumented . She says for real reform , discussion must be on providing unskilled worker visas . Comment: Jacoby : In dynamic economy , entry will always outpace enforcement .
Tamar Jacoby : Immigration reform in air , but focus tends to be on the undocumented . She says for real reform , discussion must be on providing unskilled worker visas . She says there 's no way to `` get in line '' if no visas are available . Jacoby : In dynamic economy , entry will always outpace enforcement .