After more than 10 years of on-and-off debate in Washington , the most important piece of the puzzle is still rarely discussed and poorly understood . 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 . Comment: Jacoby : In dynamic economy , entry will always outpace enforcement .