Given the link between alcohol consumption during pregnancy and birth defects, should expectant mothers who drink be arrested for assault? If not, it is hard to see why Mallory Loyola is in jail. Loyola, who was arrested last week after giving birth to a baby girl who tested positive for amphetamine, is the first woman to be charged under a new Tennessee law that criminalizes drug consumption by pregnant women. The law, ostensibly aimed at protecting children, is really about punishing what its chief sponsor described as "the worst of the worst": women who not only use arbitrarily proscribed intoxicants...