the prohibition on corporations , the capital of which is not wholly owned by citizens of the philippines , to engage in the retail business for a period of more than ten years from the date of the approval of the act or beyond the term of their corporate existence , whichever event comes first , is valid and lawful , because the continuance of the existence of such corporations is subject to whatever the congress may impose reasonably upon them by subsequent legislation.1 but the prohibition to engage in the retail business by associations and partnerships , the capital of which is not wholly owned by citizen of the philippines , after ten years from the date of the approval of the act , even before the end of the term of their existence as agreed upon by the associates and partners , and by alien heirs to whom the retail business is transmitted by the death of an alien engaged in the business , or by his executor or administrator , amounts to a deprivation of their property without due process of law .