The Federal Gov't acted precipitously to usurp the lawful functions of the State of Missouri in a rush to divert it's population and resources to use by the Union against the Confederate States. Missouri had already held a constitutional convention, in which the delegates chose not to secede and to remain neutral. Organization and training of the State militia was conducted according to both Missouri and Federal law. The Federal Gov't had already accepted the privately raised foreign militia regiments in St. Louis as Missouri's contribution to Lincoln's call for troops. Good luck finding authority within the Constitution for Federal invasion and takeover of the State, given it's non-belligerent stance. And no one believes those troop numbers.That argument presupposes that one accepts the right of states to seceed and consequently that federal intervention to maintain a state within the Union is wrong. While certainly beset by division, at the end of the day, Missouri remained part of the Union, which is also indicated by the fact that over 109,000 men enlisted and fought for the Union but only 30,000 men fought for the Confederacy.