Rawls's principles of justice would give us reason to provide social support to a genetically impaired child.

Rawls's second principle of justice, the principle of difference, requires that social and economic inequalities should be arranged so that they are both (a) to the greatest benefit of the least advantaged and (b) attached to offices and positions open to all under conditions of fair equality of opportunity. Given that a genetically impaired child is likely to be among the least advantaged members of society, providing social support to that child would be consistent with Rawls's second principle of justice.