“(a) In General.—The functions of the Commission are to—“(1) conduct an investigation that—“(A) investigates relevant facts and circumstances relating to the terrorist attacks of September 11, 2001, including any relevant legislation, Executive order, regulation, plan, policy, practice, or procedure; and
“(B) may include relevant facts and circumstances relating to—“(i) intelligence agencies;
“(ii) law enforcement agencies;
“(iii) diplomacy;
“(iv) immigration, nonimmigrant visas, and border control;
“(v) the flow of assets to terrorist organizations;
“(vi) commercial aviation;
“(vii) the role of congressional oversight and resource allocation; and
“(viii) other areas of the public and private sectors determined relevant by the Commission for its inquiry;
“(2) identify, review, and evaluate the lessons learned from the terrorist attacks of September 11, 2001, regarding the structure, coordination, management policies, and procedures of the Federal Government, and, if appropriate, State and local governments and nongovernmental entities, relative to detecting, preventing, and responding to such terrorist attacks; and
“(3) submit to the President and Congress such reports as are required by this title containing such findings, conclusions, and recommendations as the Commission shall determine, including proposing organization, coordination, planning, management arrangements, procedures, rules, and regulations.
“(b) Relationship to Intelligence Committees’ Inquiry.—When investigating facts and circumstances relating to the intelligence community, the Commission shall—“(1) first review the information compiled by, and the findings, conclusions, and recommendations of, the Joint Inquiry; and
“(2) after that review pursue any appropriate area of inquiry if the Commission determines that—“(A) the Joint Inquiry had not investigated that area;
“(B) the Joint Inquiry’s investigation of that area had not been complete; or
“(C) new information not reviewed by the Joint Inquiry had become available with respect to that area.