An article from Belgium, translated from French by The Google, “Eight objectives to streamline the approach to unaccompanied foreign minors”:
Today, 2670 young people are welcomed in the Fedasil network and by the communities, compared to 1029 in 2019. In 2021, Belgium saw a total of 3351 young people who declared themselves minors. The Guardianship Service of the FPS Justice carried out 2515 age tests to verify these declarations. In total, 2435 decisions were made: at the end of the test, 69% were declared major and 31% were declared minors.
If migrants are undocumented, how can an “age test” be performed?
(Based on the folks whom I’ve talked to, the U.S. doesn’t try to do this. A migrant who identifies him/her/zir/theirself as a minor is a minor.)