
Gen. Benedict Arnold is shown in an undated sketch by an unknown artist. (AP Photo/Library of Congress)

Gen. Benedict Arnold is shown in an undated sketch by an unknown artist. (AP Photo/Library of Congress)

American pianist and composer Burt Bacharach was to receive the Library of Congress Gershwin Prize for Popular Song from President Obama on Wednesday night along with his longtime lyricist, Hal David. It is named for George and Ira Gershwin. (Associated Press)

American pianist and composer Burt Bacharach was to receive the Library of Congress Gershwin Prize for Popular Song from President Obama on Wednesday night along with his longtime lyricist, Hal David. It is named for George and Ira Gershwin. (Associated Press)

** FILE ** In this March 13, 2012, file photo Sen. Jack Reed, D-R.I., joins students at a Capitol Hill news conference to announce the collection of more than 130,000 letters to Congress to prevent student loan interest rates from doubling this July. The Senate planned a Tuesday May 8, 2012, roll call on a plan, which would extend today's 3.4 percent interest rates on subsidized Stafford loans for another year. (AP Photo/Manuel Balce Ceneta, File)

** FILE ** In this March 13, 2012, file photo Sen. Jack Reed, D-R.I., joins students at a Capitol Hill news conference to announce the collection of more than 130,000 letters to Congress to prevent student loan interest rates from doubling this July. The Senate planned a Tuesday May 8, 2012, roll call on a plan, which would extend today's 3.4 percent interest rates on subsidized Stafford loans for another year. (AP Photo/Manuel Balce Ceneta, File)

Former Major League Baseball pitcher Roger Clemens (center) leaves federal court in Washington on May 1, 2012, as his perjury retrial continues. Clemens faces charges of lying to Congress in 2008 when he said he had never used steroids of human growth hormone. (Associated Press

Former Major League Baseball pitcher Roger Clemens (center) leaves federal court in Washington on May 1, 2012, as his perjury retrial continues. Clemens faces charges of lying to Congress in 2008 when he said he had never used steroids of human growth hormone. (Associated Press

Delegate Eleanor Holmes Norton, the District's nonvoting member of Congress, is joined by Mayor Vincent C. Gray as they march in the city's Emancipation Day parade Monday. The celebrated day in 1862 was about nine months before the historic Emanicpation Proclamation. (Rod Lamkey Jr./The Washington Times)