Michigan officials usually are very careful about the text of the bills they vote on or enact as a regulation. This is because every word can make a big difference about how the law is interpreted. When police deviate from the letter of the law, it often means that a suspect’s rights are being violated. This is why even seemingly minor infractions matter, as a case from another state shows.
Until recently, Missouri regulations required police officers to periodically test their breath test machines at three levels: at 0.10 percent, 0.08 percent and 0.04 percent. This was likely to ensure that the device is giving accurate results during a DUI stop. But many officers failed to test their devices at all three levels, though the regulation was in place for 14 months.