congress has organized the national guard under its power to "raise and support armies" and not its power to "provide for organizing, arming and disciplining the militia". this congress chose to do in the interests of organizing reserve military units which were not limited in deployment by the strictures of our power over the constitutional militia, which can be called forth only "to execute the laws of the union, suppress insurrections and repel invasions." the modern national guard was specifically intended to avoid status as the constitutional militia, a distinction recognized by 10 u.s.c. sec 311(a).