
    UNITED STATES of America, Plaintiff-Appellee, v. Samuel Joe JACKSON, Defendant-Appellant.
    No. 72-2140
    Summary Calendar.
    
    United States Court of Appeals, Fifth Circuit.
    Sept. 6, 1972.
    Before BELL, DYER and CLARK, Circuit Judges.
    
      
       Rule 18, 5 Cir.; see Isbell Enterprises, Inc. v. Citizens Casualty Company of New York et al., 5 Cir. 1970, 431 F.2d 409, Part I.
    
   PER CURIAM:

Affirmed. See Local Rule 21.L , 
      
      . See NLRB v. Amalgamated Clothing Workers of America, 5 Cir. 1970, 430 F.2d 966.
     
      
      . The sole argument on this appeal urges that we depart from this Circuit’s established rule which vests discretion in the trial court to permit the government to attack the defendant’s credibility as a witness in his own behalf by showing prior felony convictions.
     