{"data":{"id":"us/49-cfr-1503.637","jurisdiction":"us","citation":"49 CFR 1503.637","heading":"Standard of proof.","body":"The ALJ may issue an initial decision or may rule in a party's favor only if the decision or ruling is supported by a preponderance of the evidence contained in the record. In order to prevail, the party with the burden of proof must prove the party's case or defense by a preponderance of the evidence.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER XII—TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER A—ADMINISTRATIVE AND PROCEDURAL RULES","PART 1503—INVESTIGATIVE AND ENFORCEMENT PROCEDURES","Subpart G—Rules of Practice in TSA Civil Penalty Actions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"ffe881aec4f5ab3429d418f18ef64ffe3bcac6c57d240710dce9b8a23a00071e","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-1503.635","next":"us/49-cfr-1503.639"},"notice":"GroundRules: Original legal text. Not legal advice."}