The U.S. Senate is involved in investigating the GSA spending scandal.

Leaders of the Senate Homeland Security and Governmental Affairs Committee Thursday asked the General Services Administration to provide details about its financial management and internal controls aimed at preventing waste, fraud and abuse, in the wake of a scathing inspector general report about GSA’s 2010 Western Regions Conference (WRC) held near Las Vegas.

Chairman Joe Lieberman (I-Conn.) and Ranking Member Susan Collins (R-Maine), whose committee is tasked with overseeing agency efficiency and effectiveness, requested the information in a nine-page letter, released to the public Monday and filled with questions about conference spending, travel, awards and contracting. They addressed the letter to Acting GSA Administrator Dan Tangherlini.