[More after the jump...]
Backed by the United States Marine Band, Clarkson sang a soaring rendition of the song. Clarkson inserted herself in the 2012 presidential race when she endorsed Ron Paul, but then remarked that she was voting for Obama “again” after Paul was out of the Republican race.
Clarkson cheekily tweeted after her brava performance: “Wow...I was incredibly nervous and cold ha! I just wanna officially thank President Obama for opening for me haha!...”