COMMON law has long held that committing a crime requires both a prohibited act and a “mens rea”, or “guilty mind”—the criminal knowing that the act was wrong. There is no global consensus regarding the youngest age at which a child can be deemed to have such intent, and thus can be tried and convicted of a criminal offence. Ten years ago the United Nations Committee on the Rights of the Child recommended an “absolute minimum” age of 12 for criminal responsibility, and urged countries “to continue to increase it to a higher age level”. The Philippines appears poised to move in the opposite direction: lawmakers there have proposed reducing the cut-off from 15 years old to nine. The bill has prompted sharp criticism both at home and abroad, and legislators are still arguing over its text.

Not long ago the Philippines earned a reputation for a relatively progressive stance on this issue. It introduced its current minimum age of criminal responsibility (MACR) in 2006, making it one of just 19 countries whose MACR is 15 or older. However, Rodrigo Duterte, the president, has adopted a harsh “tough-on-crime” agenda. The bill’s supporters say it would stop adult criminals from recruiting children under the age of criminal responsibility for drug-trafficking. Human-rights advocates counter that there is no evidence that this would reduce crime. Instead, says Leo Ratledge of Child Rights International Network, a British charity, it would punish victims of exploitation rather than those who exploit them.