DPS breath test operator suspended
The Texas Department of Public Safety has suspended the certification of an independent contractor who improperlly certified breath test results. Not surprisingly, this has generated a number of comments. Grits contains stories from both the Dallas Morning News and Houston Chronicle. Another blog list the agencies that are effected. Unfortunately, this is one more example of an expert who was too lazy to do the work. Fortunately they were caught, but this points out again the problems with blindly accepting expert opinions. It also points the need to scrutinize experts more carefully, and ensure they are qualified, and doing the work they claim they are doing.
This big question is what is going to happen to those cases where this expert testified. For defendants who plead guilty the answer is "it depends". In a writ of habeas corpus you have to establish harm. In this case, the harm would in the failure to actually certify the machine. In a guilty plea, By pleading guilty, you did not challenge the breath test, and therefore you are probably going to have to establish the machine's reading was not accurate. That is impossible to do, since sample are not maintained, and there would be nothing to re-test.
Another way to evaluate guilty plea cases though is whether you would have plead guilty if you knew the machines had not been probably certified. The answer is probably no, since the breath test results would not be admissible. Of course, if the evidence was overwhelming, the answer is probably different. To prevail on this claim, you would have to establish a duty on the State to disclose the evidence. They are charged with knowledge of whatever law enforcement knows, so even if the prosecutor didn't know about the problem, that is not a valid excuse. Generally though you have to make a request for the evidence, which is usually a Request of Favorable or Exculpatory Evidence. If no request was made, you may not be able to establish the claim.
For defendants who went to trial, they will probably be able to obtain relief. The machines have to be certified if the test results are going to be admissible, and therefore the expert would have committed perjury in testifying that the machine was properly certified.
For any claim, you are going to have to able to establish the machine in your case was not properly certified. How difficult that is going to be remains to be seen. Hopefully DPS will identify those cases involving improper certifications and notify the defendants and their lawyer.
The effects of this are not going to be fully known. If you think your case may be one effected you should check it out.
