David Frum asks:

This morning’s joint oped by Florida Gov. Jeb Bush and ex RNC chairman Ken Mehlman is not yet up on the OpinionJournal website. But if you are one of those who reads the dead-tree edition, take a look for yourself and then ask: Why is it that proponents of this immigration bill never address what the bill will actually do?

David, my guess is that they haven’t read it. And nor, I reckon, has President Bush. And if I’m wrong about that, let him prove it. In detail.