Section 4. Who are Disqualified. —

The following can not be naturalized as Philippine citizens:

1. Persons opposed to organized government or affiliated with any association or group of persons who uphold and teach doctrines opposing all organized governments;

2. Persons defending or teaching the necessity or propriety of violence, personal assault, or assassination for the success and predominance of their ideas;

3. Polygamists or believers in the practice of polygamy;

4. Persons convicted of crimes involving moral turpitude;

5. Persons suffering from mental alienation or incurable contagious diseases;

6. Persons who, during the period of their residence in the Philippines, have not mingled socially with the Filipinos, or who have not evinced a sincere desire to learn and embrace the customs, traditions, and ideals of the Filipinos;

7. Citizens or subjects of nations with whom the United States and the Philippines are at war, during the period of such war;

8. Citizens or subjects of a foreign country other than the United States, whose laws do not grant Filipinos the right to become naturalized citizens or subjects thereof.