Original...

The Social Security Act of 1935

https://www.ssa.gov/history/35act.html#TITLE%20XI

6(d) Nothing in this Act shall be construed as authorizing any Federal official, agent, or representative, in carrying out any of the provisions of this Act, to take charge of any child over the objection of either of the parents of such child, or of the person standing in loco parentis to such child.