The National Defense Authorization Act for Fiscal Year 2008 is a law in the United States signed by President George W. Bush on January 28, 2008. As a bill it was H.R. 4986 in the 110th Congress. The overall purpose of the law is to authorize funding for the defense of the United States and its interests abroad, for military construction, and for national security-related energy programs. In a controversial signing statement, President Bush instructs the executive branch to construe Sections 841, 846, 1079, and 1222 "in a manner consistent with the constitutional authority of the President."