Sentence:  The action of the Commission in allowing or denying any claim under this <WSD>title</WSD> shall be final and conclusive on all questions of law and fact and not subject to review by the Secretary of State or any other official , department , agency , or establishment of the United States or by any court by mandamus or otherwise . 
Meaning of the word marked with <WSD> tags:  a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with