I-Team: Who's Holding Labs Accountable?

CHICAGO (WLS) -- New fallout after a DUI drug testing scandal. Now, he ABC7 I-Team with growing questions.

Who's holding these forensic labs accountable? Mark Rivera heads to Texas, where one of the most influential laboratories and commissions in the country operates.

What sets this crime lab apart? How Illinois compares, and what it means for criminal justice, Tuesday at 10 p.m.