Colin Miller, Crossing Over: Why Attorneys (and Judges) Should Not be Able to Cross-Examine Witnesses Regarding Their Immigration Statuses for Impeachment Purposes,104 Nw. U. L. Rev. Colloquy 290 (2010), http://www.law.northwestern.edu/lawreview/colloquy/2010/6/LRColl2010n6Miller.pdf.