See: Weaver v. United States, 374 F.2d 878, 881 (5th Cir. 1967); United States v. Paroutian, 299 F.2d 486, 489 (2d Cir. 1962). United States v. Polk, 433 F.2d 644 (5th Cir. 1970); United States v. Johnson, 413 F.2d 1396 (5th Cir. 1969), affirmed en banc, 431 F.2d 441; United States v. Smith, 423 F.2d 1357, 1359 (5th Cir. 1970); Cotton v. United States, 371 F.2d 385, 392 (9th Cir. 1967). 431 F.2d 441 (5th Cir. 1970) (En Banc).