Link: http://www.fas.org/sgp/crs/row/R41959.pdf

From the Congressional Research Service via FAS-

"The United States often looks to Europe as its partner of choice in addressing important global challenges. Given the extent of the transatlantic relationship, congressional foreign policy activities and interests frequently involve Europe. The relationship between the United States and the European Union (EU) has become increasingly significant in recent years, and it is likely to grow even more important. In this context, Members of Congress often have an interest in understanding the complexities of EU policy making, assessing the compatibility and effectiveness of U.S. and EU policy approaches, or exploring the long-term implications of changing transatlantic dynamics."

Link: http://www.thereaganvision.org/wp-content/uploads/2011/08/CRS-Comprehensive-Nuclear-Test-Ban-Treaty-Background-and-Current-Developments.pdf

From the Congressional Research Service via The Reagan Vision -

"A ban on all nuclear tests is the oldest item on the nuclear arms control agenda. Three treaties that entered into force between 1963 and 1990 limit but do not ban such tests. In 1996, the U.N. General Assembly adopted the Comprehensive Nuclear-Test-Ban Treaty (CTBT), which would ban all nuclear explosions. In 1997, President Clinton sent the CTBT to the Senate, which rejected it in October 1999. In a speech in Prague in April 2009, President Obama said, “My administration will immediately and aggressively pursue U.S. ratification of the Comprehensive Test Ban Treaty.” However, the Administration focused its efforts in 2010 on securing Senate advice and consent to ratification of the New Strategic Arms Reduction Treaty (New START)."