Toward the end of the reign of the second King Jigme Wangchuck in the 1950s, the numbers of new immigrants had swelled causing tension between the King and the Dorji family in the Bhutan House. Amnesty was given through the Citizenship Act of 1958 – Bhutan's first modern laws regarding immigration and citizenship – for all those who could prove their presence in Bhutan for at least 10 years prior to 1958. On the other hand, the government also banned further immigration in 1958. The Act was pronounced by the Druk Gyalpo King Jigme Dorji Wangchuck among a series of legal and social reforms in 1958 designed to begin modernizing Bhutan, including the abolition of slavery. The 1958 Act defined Bhutanese citizenship in patrilineal terms, and provided a basic framework for the process of naturalization in Bhutan. Initially, applicants other than wives of Bhutanese citizens were required to show a ten-year residency, five years of service to the government, and ownership of agricultural land. The 1958 Act originally defined no procedural framework for immigration. It also allowed the King to make "ad hoc" changes to the law, and left decisions largely to the discretion of the King and government officials.