In (1927) the u.s. supreme court upheld the use of sterilization for the limiting reproduction for feebleminded individuals according to an iq score

The answer is "Buck vs. Bell."

This Supreme Court case ruled that a state statue (aka law) that forced people deemed as "unfit" to be sterilized was indeed legal (constitutional). The court, in their majority opinion, ruled that this did not break the due process clause of the 14th amendment. This court case has never been officially overturned, despite its controversial ruling.

The Open Door policy—first initiated in 1899, with a follow-up missive in 1900—was significant in its attempt by the United States to establish an international protocol of equal privileges for all countries trading with China and to support China's territorial and administrative integrity.
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