U.S. President Barack Obama, whose administration is fighting to keep gay soldiers from serving openly in the American armed forces, this week quietly issued a presidential memorandum ignoring federal law to withdraw military assistance from nations that use child soldiers — permitting Chad, the Democratic Republic of the Congo, Sudan, and Yemen to continue the practice of deploying weapon-wielding children while receiving military aid paid for by American taxpayers. Even gay ones. Obama’s says his decision, recommended by a State Department review, is based on the national security interest of maintaining relationships with these African allies despite their atrocious human rights records. When Mr. Obama was a U.S. Senator, he supported the Child Soldiers Prevention Act, which would have mandated sanctions against such countries.