Does anyone know where in the Shulchan Aruch it says Jews are not allowed to Move To Israel in large numbers?
As far as I remember Torah authentic Judaism does not rule based on the Gemarah itself, rather there is a Mesorah we take the Rishonim and Achrnoim into consideration.
The RAMBAM, ROSH, RIF, SHULCAN ARUCH, REMA, SHACH, TAZ, MISHNEH BERURAH, ETC. DO NOT state that large number of Jews are forbidden to come back home!