On January 10, 2014, Miller introduced the United States Customs and Border Protection Authorization Act (H.R. 3846; 113th Congress), a bill that would authorize the Customs and Border Protection (CBP) and its mission and direct the CBP in the United States Department of Homeland Security to establish standard procedures for addressing complaints made against CBP employees and to enhance training for CBP officers and agents. Miller said that "Today, the House passed legislation that provides the necessary statutory authorization that will protect the agency's mission by providing our officers and agents proper authorities to carry out their important work."