 [ T ] his Court has no appellate jurisdiction confided to it in criminal cases , by the laws of the United States . It cannot entertain a writ of error , to revise the judgment of the Circuit Court , in any case where a party has been convicted of a public offence . And undoubtedly the denial of this authority proceeded upon great principles of public policy and convenience . If every party had a right to bring before this Court every case , in which judgment had passed against him , for a crime or misdemeanor or felony , the course of justice might be materially delayed and obstructed , and , in some cases , totally frustrated . If , then , this Court cannot directly revise a judgment of the Circuit Court in a criminal case , what reason is there to suppose , that it was intended to vest it with the authority to do it indirectly ? 
