It is the Statue of Freedom, and NOT Persephone.
Statue of Freedom
"The statue is a classical female figure of Freedom wearing flowing draperies. Her right hand rests upon the hilt of a sheathed sword; her left holds a laurel wreath of victory and the shield of the United States with 13 stripes. Her helmet is encircled by stars and features a crest composed of an eagle's head, feathers, and talons, a reference to the costume of Native Americans. A brooch inscribed "U.S." secures her fringed robes. She stands on a cast-iron globe encircled with the words E Pluribus Unum, the national motto at the time of her placement atop the dome."
Crawford was commissioned to design the Statue of Freedom in 1855 from a sketch drawing and executed the plaster model for the statue in his studio in Rome.
Capitol Building History
"Six groups of figures line the perimeter of the canopy; the following list begins below the central group and proceeds clockwise:
War, with Armed Freedom and the eagle defeating Tyranny and Kingly Power
Science, with Minerva teaching Benjamin Franklin, Robert Fulton, and Samuel F.B. Morse
Marine, with Neptune holding his trident and Venus holding the transatlantic cable, which was being laid at the time the fresco was painted
Commerce, with Mercury handing a bag of money to Robert Morris, financier of the American Revolution
Mechanics, with Vulcan at the anvil and forge, producing a cannon and a steam engine
Agriculture, with Ceres seated on the McCormick Reaper, accompanied by America in a red liberty cap and Flora picking flowers.
You may see it up close
here. and quotes from
here.
However, nothing as blashphemous as Jamie Foxx's call to praise their Lord and Savior Barrack Obama - Barrack Obama!