IPPR is arguing that an amnesty for illegal immigrants would bring in £1bn in extra taxes, and save the Treasury up to £4.7bn.
There is no official estimate of illegal immigrant numbers. Unofficial estimates vary from 310,000 to 870,000. Jack Dromey, deputy general secretary of the Transport and General Workers Union, has argued in the past that it would be "impractical and immoral" to deport the thousands of illegal migrants, stating "The time has come for the government to be brave, distinguishing between deporting the few who commit serious crimes and allowing the many undocumented migrant workers to remain. They are good men and women, essential to our economy and pillars of their local churches and communities."
But can you even contemplate an amnesty without first having an ID card system? Surely the UK would become a magnet for illegal migrants if the government were to announce an amnesty before ID cards are in place?
What do you think?