Gaga - 2011 (Obama term 1 - three years after debut)   Beyonce - 2008 (Bush era - five years after Debut)    Madonna - 2000 (Clinton era - 17 years after debut)    Xtina - 2000 (Clinton era - 1 year after debut)   JLo - 1999 (Clinton era - 0 years after debut)   who else?