Because liberals in power would rather align with fascists than anyone to the left. Look at how US Democrats would rather debate the merits of executing abortion doctors than debate Medicare for All, how how UK Labour would rather argue whether transwomen should be allowed in public spaces rather than bringing back council housing. Corporate interests will always lead to fascism since it is the only way to continue selling the failed promises of capital
Also, both Testaments of the bible explicitly say that you should be kind to foreigners living in your land