As Minister of Justice and Constitutional Affairs of Uganda, a position that also made him the Attorney General of Uganda, Lule dealt with the complicated legal justification of the unconstitutional actions of the increasingly erratic Idi Amin. He defended the 1975 Land Reform Decree 1975, which overhauled the country's land tenure system by overturning the Public Lands Act of 1969 and eliminating all private property in Uganda and making all land in Uganda to be public land owned by the government of Uganda, with land leased to private enterprises from the government of Uganda. He also had to deal with the legal consequences the Expulsion of Asians from Uganda where Idi Amin ordered the deportation of 80,000 Ugandans of Indian Descent from Uganda, adjudicating on what happened to their property left behind when Uganda's South Asian Minority was deported and Ugandan citizens of Indian ancestry voluntarily left due to increased Indophobia in Uganda. He also frequently travelled to Geneva, Switzerland and other cities to defend the Idi Amin regime to international bodies and foreign governments.