recapture the unused green cards and thus make life easy for those potential immigrant workers who are helping the state

There are thousands of families who have been trying to get Permanent Status.These are people who contribute to the society,pay taxes and have earned their dues.However due to no significant political interest supporting them they are languishing.
There are >250000 unused green cards since 1990s.
Suggest that they be used to benefits these immigrants to get their green cards
The unused green cards should also be used for families that have been separated due to the prolonged immigration wait.
Remember these are legal immigrants..They have contributed to the economy,paid taxes and are law abiding citizens.