We need to understand this tradeoff as we seek to protect ourselves from danger. Yesterday the Supreme Court agreed to decide whether a public hospital can test pregnant women for drug use and report results to police. It is noble to protect the health of the unborn child. But the invasion is unprecedented. We are slowly eroding the 4th amendment protection against unreasonable search and seizure.
Some steps seem reasonable.
You can be stopped at an alcohol roadblock and checked by police without ever wavering across the lines. If you work in a profession like piloting commercial aircraft, public safety allows a warrentless drug test. A pregnant woman 's urine is screened. If drugs appear, she may be prosecuted. Remember, this results from a voluntary trip to the doctor.