. See N.L.R.B. v. Amalgamated Clothing Workers of America, 5 Cir., 1970, 430 F.2d 966.

. Appellant contended in his motion to vacate, 28 U.S.C. § 2255, that (1) his pleas of guilt were induced by promises made by federal agents; (2) he did not understand the charges in the indictment; (3) a factual basis for his plea was never established; (4) he was never informed he could withdraw his Rule 20 consent and plead not guilty; and (5) the indictment was erroneous and insufficient.