In Article KA (ཀ), the residency requirement for naturalization is lengthened to 15 years for those in the service of the Bhutanese government and 20 years for all other applicants. In addition, foreigners are required to show "some knowledge" of written and spoken Bhutanese and the history of Bhutan in order to apply to the Ministry of Home Affairs. After investigating, the Ministry forwards the application to the royal government. Article KHA (ཁ) provides that the power to grant or reject applications rests solely with the royal government, and disclaims that the fulfillment of all conditions does not guarantee applicants' eligibility. This Article also prohibits dual citizenship, naturalization of criminals, and naturalization of those "related to any person involved in activities against the people, the country and the King." This law is an example of a "de jure" imputation of political opinion. Article KHA also requires naturalized citizens to register their names in the census record of the royal government from the date of naturalization, and to take an oath administered by the Home Minister. This Article codifies a particular oath of citizenship, which pledges allegiance to the King alone, pledges to obey the law and to "observe all the customs and traditions of the people of Bhutan." The oath pledges "not [to] commit any act against the country, the people and the King." The oath is then solemnized in the name of Yeshey Goempo and with a promise to serve the country to the best of one's ability. The next Article, GA (ག), permits a "Special Grant of Citizenship" to foreigners with "special or extraordinary qualifications" to be granted citizenship, waiving all conditions except for the administration of the oath. This is a significant substantive and procedural departure from the original 1958 Act. Article NGA (ང) requires citizens who leave Bhutan, return, and apply for citizenship to undergo "probation for a period of at least two years." If the applicant is successful, this Article grants citizenship for applicants provided they are "not responsible for any activities against the Royal Government." This is another significant substantive and procedural departure from the original 1958 Act. The maximum duration and exact investigatory nature of the probation period are undefined, however, apparently leaving much to discretion. Naturalized Bhutanese citizens may renounce Bhutanese citizenship ("apply for permission to emigrate" from Bhutan) together with their family members. The government grants the request after an investigation. Thereafter, the same person may not re-apply for Bhutanese citizenship.