National holiday:
Discovery Day, first Monday in March (1521)
Constitution:
Organic Act of Guam, 1 August 1950
Legal system:
modeled on US; US federal laws apply
Suffrage:
18 years of age; universal; US citizens but do not vote in US presidential elections
Executive branch:
chief of state: President Barack H. OBAMA (since 20 January 2009); Vice President Joseph R. BIDEN (since 20 January 2009)