Three main alternatives are generally presented to Puerto Rican voters during a Puerto Rico political status plebiscite: full independence, maintenance or enhancement of the current commonwealth status, and full statehood into the American Union. The exact expectations for each of these status formulas are a matter of debate by a given position's adherents and detractors. Puerto Ricans have proposed positions that modify the three alternatives above, such as (a) indemnified independence with phased-out US subsidy, (b) expanded political but not fiscal autonomy, and (c) statehood with a gradual phasing out of federal tax exemption.[citation needed][note 1]