U.S. President Barack Obama (C) signs the Violence Against Women Act into law at the Department of the Interior in Washington D.C., capital of the United States, March 7, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama (L) speaks before signing the Violence Against Women Act into law at the Department of the Interior in Washington D.C., capital of the United States, March 7, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama (L) shakes hands with Vice President Joe Biden before signing the Violence Against Women Act into law at the Department of the Interior in Washington D.C., capital of the United States, March 7, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama speaks before signing the Violence Against Women Act into law at the Department of the Interior in Washington D.C., capital of the United States, March 7, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama (L) speaks while Vice President Joe Biden (R) stands by before signing the Violence Against Women Act into law at the Department of the Interior in Washington D.C., capital of the United States, March 7, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obamas (C) gestures after signing the Violence Against Women Act into law at the Department of the Interior in Washington D.C., capital of the United States, March 7, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama (C) signs the Violence Against Women Act into law at the Department of the Interior in Washington D.C., capital of the United States, March 7, 2013. (Xinhua/Zhang Jun)