Income tax
Because the government collects the source of income tax.
A Prime Minister is the head of the government, and is generally designed to 'lead' the government and represent it in the eyes of the people. A President is the Head of State, usually with large power and influence within the country. A President is also usually elected by the people, whereas a Prime Minister is elected by the politicians in a party as the head of that particular party.
The federal claim was based on allegations that original ownership of the land was held by the united states before california was made a state, that former supreme court cases adjudicating state ownership were erroneous and should be overruled
