Controversial proposal would only hit babies born after rule is introduced . At the moment there are four or more families with around 320,000 children . Child benefit paid to under 16s - or under 20s in education or training . It is worth £20.50 a week for a first child , then £13.55 for other children . Work and Pensions Secretary Iain Duncan Smith is championing the plan .
Controversial proposal would only hit babies born after rule is introduced . At the moment there are around 320,000 families with four or more children . Child benefit paid to under 16s - or under 20s in education or training . It is worth £20.50 a week for a first child , then £13.55 for other children . Work and Pensions Secretary Iain Duncan Smith is championing the plan .