No, it's not.
"As laudable as the prohibition of a particular type of abuse of girls may be ... federalism concerns deprive Congress of the power to enact this statute," Friedman wrote in his 28-page opinion, noting: "Congress overstepped its bounds by legislating to prohibit FGM ... FGM is a 'local criminal activity' which, in keeping with long-standing tradition and our federal system of government, is for the states to regulate, not Congress."
This ruling, all too rare, properly upholds the Constitutional limits on federal power. Per the Tenth Amendment, the federal government only has that authority which the Constitution explicitly delegates to it; all other powers being reserved to the states or the people. As savage and brutal as the practice of FGM is, and as unacceptable as it ought to be in any civilized society, the power to enact and enforce laws against it belongs to the states, not to the federal government.