It's purely PC BS that we can't get this information.
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It is actually WORSE than that. The "government" (justice department) wants to desperately HIDE THE IDENTITY of what is coming across our borders. It is total politically-driven INSANITY. Think about that. YOUR GOVERNMENT is hiding the identity of felons, which means they are protecting the CRIMINALS and saying "DROP DEAD" to American citizens -- who have every Constitutional right to this information. Just another MASSIVE, DELIBERATE FAILURE to perform for the American people.
I dont have an exact quote, but O'Reilly asked Judge Napalotano about why the admin wanted to hide the identity of illegals (criminals). The judge said something along the lines of - it could be that the gov. believes some terrorists may be among them..that they could be used for information...
I translated that comment as "lets let them loose, then follow them so we can learn about where they go..etc. If that is even close to the reason..it is dangerous and STUPID!