Why the Bipartisan Proposal for Biometric ID Cards Will Probably Fail

A pair of senators, one red, one blue, have today proposed a biometric ID system to "mend" immigration. It's part of a bipartisan immigration bill backed by President Obama, and proposes to replace everyone's social security cards with one that stores biometric information about the individual. But just how practical is the proposal? Perhaps it's worth casting a look at similar proposals in Britain.

This is how the ID card proposals have evolved in the U.K. Governing party outlines its...